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When Lisha Astorga first bought her five-acre property in Sky Valley
there wasn’t much on it aside from sandy soil and sparse plants
she transformed it into a little piece of paradise
I’ve always loved gardening,” Astorga said
More unique than her straw-bale insulated house might be her gardens
a hands-on project that boasts a collection of native plants
water features and a circular swimming pool
But maybe the best part of her garden is that finances were never a problem
As dwindling water resources became a hot topic around the valley
more people are removing grass and tropical plants
Introducing desert-friendly plants to an area has many benefits
and with a little ingenuity and a fearless attitude a desert landscape can be easily achieved
Plants that are adapted to the dry conditions require little water
which in turn helps reduce household bills
the president of the Desert Horticultural Society
These low-water gardens are also more sustainable for the area
and are ideal for part-time residents who need a yard that requires little maintenance
said Daniel Clemens is limited because of the harsh conditions of the Mojave desert
Clemens recommends investing a little bit of money into big-statement specimen plants like agaves or barrel cacti
Filler plants can be used to to surround and accentuate the bigger pieces
“[Specimen plants] anchor a yard,” Clemens said
it just looks like a lot of little stuff.”
Other plants that thrive in the hot conditions are chuperosa
While these plants may not have the recognizable blossoms of a petunia or daisy
these plants do bloom lending their own unique beauty to a garden
Plants can be purchased at local nurseries or even big box stores
A more economical way is to simply take a walk
Dried seed pods can be plucked from bushes or flowers and simply replanted into the garden
a branch can be removed and transplanted into the earth
Clemens offers a quick tip for lovers of agave or cacti: Plant them away from heavily trafficked areas
Many people love the look of spiny agaves or the look of a regal barrel cactus
but the thorns can spell trouble for little fingers or pets
The desert offers a blank canvas and yards can be as full or as sparse as a gardens allows
“The more plants you have on your property
regardless of their ability to adapt to their surroundings
Aloes or agaves aren’t found in the outlying desert
Many species are brought in from other states or even as far as Africa
Native is more a relative term to describe what can successfully grow in the area
“That’s why a desert landscape means so many different things to so many different people,” Smith explained
you’re going to see plants that people don’t want in their yard.”
A benefit to transitioning to a desert landscape
is how it allows more adept plants to reclaim their territory
“Desert plants have an amazing capacity to reseed themselves,” said Wehrli
the desert plants will thrive on their own.”
both Wehrli and Astorga have seen native plants reseed themselves throughout their garden
If they don’t like where a plant chooses to grow
Like tropical plants or grasses that become invasive to the area
plants within a garden can also become meddlesome
Stemming from her own experiences with mint
who is associated with Desert Master Gardeners out of Indio
had to deal with a weed that was not only taking control of her garden
This need for lush green lawns stems from many people wanting something more familiar
“We all come with our favorite aesthetic from our last residence,” explained Wehrli
“It’s really imperative to become comfortable with the new aesthetic.”
It may not be the savings that has been drawing more people to this unique landscape
Clemens believes as more people rediscover the stark lines and simplistic beauty of the modernist period
“People see all these modern homes and they’re not like Hawaii,” Clemens said
“They’re stark with very minimalist interiors and exteriors
It’s all about minimalism and desert landscaping fits that perfectly.”
Certain species of grass can be removed with the help of an outside crew or by the homeowner
however the former is more labor intensive
is more of a challenge because the roots burrow deep into the soil
The only remedy Smith knows for this invasive grass is for a homeowner to use a pesticide
it’s all about research and thinking outside the box
Astorga was resourceful with her garden needs
traded with locals and even rescued a few plants and decorative items from the roadside
Many of her plants came from plant exchanges or plant sales at local nurseries
above-ground pool that was simply repurposed
The surfboards hanging around her backyard were castoffs from a surfer
Doing the landscape without the help of an experienced crew can be difficult and take time
but Astorga recommends tackling the project in small increments
Once piece of the yard is finished before she moves on to another aspect
Astorga does the minimum and lets nature take care of the rest
her trimming is minimal to allow for more shade for her house and the critters that venture to her water feature
she “whacks it all back and what’s going to live
She has an easy attitude when it comes to maintenance for her garden
because it’s through experiences that she learns the most about her plants
She’s prepared that some projects will fail
“This is what being an amateur gardener is about,” Astorga explained
“You can do as much research as you can and figure out as much as you can
Cuban middleweight Yoenli Hernández showcased his dominance once again
stopping Mexico’s Ángel Ruiz Astorga in the fifth round to successfully defend his WBA Continental Latin America title
The bout took place this Saturday at the T-Mobile Arena in Las Vegas
serving as the lead-up to the highly anticipated clash between David Benavidez and David Morrell
Ruiz Astorga showcased remarkable durability
but struggled to mount any meaningful resistance
with uppercuts proving to be his most punishing weapon
repeatedly snapping Ruiz Astorga’s head back
backing against the ropes and absorbing punishment without offering much in return
The fourth round saw Ruiz Astorga in dire straits
visibly hurt but managing to stay on his feet
stepping in to halt the contest and award Hernández the technical knockout victory
Hernández improves to a flawless 7-0 record
further cementing his status as the mandatory challenger in the WBA rankings
where fellow Cuban Erislandy Lara currently reigns
The World Boxing Association (WBA) has officially opened online registration..
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Enzo Astorga thinks as he spells a word during round one of the 2024 Scripps National Spelling Bee preliminaries May 28 in National Harbor, Md. Astorga was eliminated in the first round and placed 192nd. (Photo provided by Craig Hudson/Scripps National Spelling Bee)
BELPRE – Belpre City Schools fifth-grader Enzo Astorga participated in the 2024 Scripps National Spelling Bee at the end of May and had a great time, though he didn’t win.
Astorga, 11, won the 43rd annual Marietta Times Regional Spelling Bee in March by spelling “languish” correctly to earn a spot along with 244 others in the national spelling bee that was held in Oak Harbor, Md., May 28 to June 3. He was one of only 18 fifth graders and 26 11-year-olds to compete in the national bee.
According to the spelling bee’s website, Astorga finished 192nd along with 50 other spellers, all of whom were eliminated in the first round. He went out on the word “chopine” spelling it c-h-a-p-e-e-n. According to Merriam Webster’s website, a “chopine” is a type of woman’s shoe from the 16th and 17th centuries.
Astorga’s mother, Stacey Schimke, went with him to the national bee. She said even though he went out in the first round they had a good time.
“We still had a really good time and enjoyed it,” Schimke said.
Belpre City Schools student Enzo Astorga, 11, smiles as he participates in round one of the preliminaries on May 28 during the 2024 Scripps National Spelling Bee in National Harbor, Md. Astorga placed 192nd after being eliminated during the first round. (Photo provided by Craig Hudson/Scripps National Spelling Bee)
She said the bee went well and that it was very organized and impressive.
According to Schimke, she and Astorga went on a trolley tour of Washington, D.C., went to the International Spy Museum, saw the Capitol and visited other monuments and museums.
“He had a really good time,” she said.
According to Schimke, Astorga is thankful he got to go to the national bee even though he didn’t win.
Astorga agreed with his mother that he enjoyed the national bee and said it was really fun.
“I didn’t get that far, but I was able to do good in the (Marietta Times Regional Spelling Bee),” Astorga said of his performance in the national bee.
According to Astorga, his favorite part of the national bee was Bee Week, where participants got to eat food, collect signatures from each other, and more. Astorga liked seeing the museums in Washington and definitely has a favorite.
“My favorite was the Museum of Illusions,’ he said.
Astorga said the museum was full of illusions that “trick your brain.” According to its website, the Museum of Illusions has exhibits featuring holograms, stereograms, optical illusions, and immersive rooms.
Astorga is not planning on letting his first-round loss stop him. He said he plans on participating in spelling bees next year to try to get back to the national bee because he heard they are doing something special for their 100th anniversary. He also said he wants to get farther in the national bee next year.
Copyright © 2025 Eastern Ohio Newspapers, Inc. | https://www.mariettatimes.com | 740-373-2121
Some records are meant to be broken. Mayan Smith-Gobat and Libby Sauter knew that the women`s speed record for the ascent of The Nose on El Capitan was theirs for the taking in fall 2014.
They set two speed records in a short period when they climbed The Nose in 5:02 and then 4:43. They took more than 1.5 hours off the old record of 7:26 which Smith-Gobat and Chantel Astorga set during a sub-24-hour link-up of The Nose and the Regular Northwest Face of Half Dome. That record was in turn nearly three hours faster than the previous women’s speed mark, set by Quinn Brett and Jes Meiris.
Smith-Gobat described the technique they used to increase speed as “pretty risky… if I fall off, I’m hopefully not going to die, but I’m going to fall a hell of a long way before I hit the end of that rope… the main difference between us and the guys who are climbing it in 2:30, is that they simulclimb more of the upper half of the route, where we are short-fixing more to keep it within the safety margin we are happy with.”
A post shared by Chantel Astorga (@chantel.astorga)
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A Turlock man was sentenced to 13 years in prison after he was convicted of arson and domestic violence
was sentenced on Friday for the crimes that happened Sept
neighbors at an apartment complex contacted police stating they heard a man assaulting a woman in one of the units
Turlock Police officers conducted a security check at the unit identified by neighbors and located the victim
She had sustained injuries resulting from the assault by Astorga
according to the district attorney’s office
The children were present during the domestic violence but were physically unharmed
who was the father of the victim’s two children
Astorga went looking for the victim at her relative’s home in a nearby apartment complex in the 1100 block of Colorado Avenue
he threatened to burn down the relative’s apartment
Astorga used an accelerant and started a vehicle fire in the carport area of the complex
The initial call reported one vehicle on fire under a carport and was upgraded to a potential structure fire as the first engine from the Turlock Fire Department was dispatched to the call
Very quickly the call was upgraded to a working structure fire as the flames raged from one vehicle to another and raced over the carport to the roofline of the single-story duplex and into the attic
The Turlock Fire Department had every engine
Squad 32 and a battalion chief responding to the scene
one quint and additional battalion chiefs from other agencies
The flames and smoke could be seen from a distance and several explosions rattled neighbors
some of whom decided to leave the immediate area
There were no injuries reported from the fire
The blaze did displace six people from their apartments and burned eight cars
The Turlock Police Department closed down Colorado Avenue between Hawkeye Avenue and Main Street and Escondido Avenue during the incident
The officers setting up the traffic control were approached by some of the residents from the duplex who said they believed the fire started under their vehicle and that it was an intentional act
The residents told the officers that Astruga was the ex-boyfriend of a relative and had come to the duplex looking for his ex-girlfriend
he said he was leaving and it was in the immediate aftermath that the fire started
Officers went to Astruga’s last known residence and found him there
He attempted to flee but was quickly apprehended
He was booked into Stanislaus County Jail on suspicion of domestic violence and 11 arson-related charges
Doorbell cameras helped investigators determine it was an arson fire
The Stanislaus County Fire Investigative Unit investigated the arson
Deputy District Attorney Vita Palazuelos prosecuted this case on behalf of the People
Belgium and Switzerland are synonymous with European chocolate ... but Spain's chocolate tradition is just as vast. The public understanding of Spanish chocolate often surfaces via churros dipped in hot chocolate sauce
Spain is equally known for a solid version of the treat
the region of Castilla y León epitomizes the unique nature of Spanish chocolate
thanks to a history that's as rich as any dark chocolate
It's not necessarily a chocolate recipe that distinguishes the city's — and
all the stories and legends that trace the treat's origins
legend has it that explorer Hernán Cortés brought Aztec and Mayan chocolate to Spain circa the 1500s
after his daughter married the future Marquis of Astorga
"the first document attesting to the presence of chocolate in Astorga dates back to 1636," Roberto Prieto Centeno
"It appears in an inventory of the belongings of the city's Marquise
which includes: 'A vessel from India for drinking chocolate.'" Regardless of its exact origin
with more than 400 manufacturers to date registered in Astorga alone
Nearly four centuries of history means that Spain's chocolatiers have had ample time to perfect their craft — and its taste
the longstanding history of Spanish chocolate materializes in its quality of taste
dozens of chocolate factories cropped up across Astorga
transforming the city with chocolate production and
along with meticulous care and attention to detail throughout the production process
are hallmarks of Astorga chocolate," explained Astorga's Roberto Prieto Centeno
For even more proof that quality of cocoa defines Spanish chocolate
consider once again the treat's history in Castilla y León
several Astorga chocolatiers supplied their products to the Spanish Royal Household
and some won awards for their high quality at international exhibitions," said Centeno
you'll find no shortage of factories — and samples — across the city
no matter whether you take a sip or a bite
Belpre City Schools fifth-grader Enzo Astorga spells a word during the the 43rd annual Marietta Times Regional Spelling Bee while second-place finisher Switzerland of Ohio Schools student Charlee Harper watches
Astorga won the regional bee and will compete in the Scripps National Spelling Bee which takes place May 28-30
Spellers from around the country and even the world
including Belpre City Schools fifth-grader Enzo Astorga
are gearing up for the 96th Scripps National Spelling Bee next week
According to a Scripps National Spelling Bee media release
245 children ranging in age from 8 to 15 advanced through local and regional spelling bees to earn the chance to compete May 28 to May 30 in the bee at Gaylord National Resort and Convention Center in National Harbor
The bee’s website said the spellers hail from all 50 states
Astorga earned his spot in the national bee by winning the 43rd annual Marietta Times Regional Spelling Bee
beating out students from 12 school districts when he correctly spelled two words
“languish” and “abject” and second place finisher Charlee Harper of Switzerland of Ohio Schools incorrectly spelled “chastise.”
Scripps National Spelling Bee Executive Director Corrie Loeffler said in the release that each year she is moved by the stories she reads about spellers in the leadup to the national bee
philanthropists and authors – they are multi-faceted young people,” Loeffler said
“The thing they have in common is a shared love of language and the empowerment that comes from having the words to make connections and express their ideas.”
Astorga fits the mold of a multi-faceted youth
According to the Scripps National Spelling Bee website
he is an 11-year-old with several hobbies including video games
swimming and stargazing with his telescope
The website said his favorite subject is science
he likes cats of which he has two and he is the oldest of four children
The release said that more than 73% or 180 spellers this year are competing for the first time in the Scripps National Spelling bee
Astorga’s mother Stacy Schimke said that she and Enzo are doing “pretty good” in the lead up to the national spelling bee
“We’ve been studying his words,” she said
She said her mother has also been helping Astorga study the words too
“I’m studying some parts of the week
“They’re pretty hard words.”
Schimke said that Astorga is excited and nervous about the national spelling bee
“I think he’s nervous too because this is probably one of the biggest events he’s ever been to,” she said
She also said she thinks Astorga is nervous because there will be cameras at the national spelling bee
Schimke and Astorga have plans to enjoy some of the attractions that the Washington
She said that the Scripps National Spelling Bee provided free tickets for a trolley tour and that they will see the Smithsonian Institution and the National Air and Space Museum
“He’s excited to see (the museums) and play at a ‘goofy golf’ place,” Schimke said about her son
“He’s excited because the resort has a pool.”
Astorga agreed that he is “a little bit excited” about the spelling bee and said he wants to see the museums
“They have a planetarium,” Astorga said
Scripps Company Vice President of Communications Michael Perry
the Scripps National Spelling Bee semifinals will be broadcast on ION from 8-10 p.m
May 29 and the finals will air from 8-10 p.m
To learn what other rounds will be broadcast and on what channels they will air
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plans on opening in April 2025 at the Higgins Corner location in south Nevada County off of Highway 49 and Combie Road
The family run restaurant takes pride in quality meals and ‘toasting’ to the blessings of each new day
owner of the five locations of Mario’s Early Toast Mimosa Bar and Eatery
sits with customers in his Granite Bay location
A new location in South County is set to open in April 2025
sits with friends during breakfast at an Early Toast location in Rocklin
Astorga wants people to know that his restaurants are not a franchise or chain
and patrons will always be treated with care
Mario’s Early Toast is opening a new location in South County
Hours of operation are expected to be 6 a.m
Two suites in the Higgins Corner shopping center await the construction of Mario’s Early Toast kitchen and dinning areas that will include both indoor and outdoor seating adjacent to the new Holiday Market
Mario’s Early Toast Mimosa House and Eatery is expected to open in April 2025
The name or the restaurant’s name has meaning for the founder — to ‘toast’ to all the blessings God shares in his grace each day
employees wear uniforms with the words ‘Love people’ on the back
“We firmly believe that in today’s society it is so important to make sure that our patrons leave feeling loved so that they can continue to spread the warmth and kindness that they received in our restaurant to the rest of the community,” according to the owner of the family run restaurants
The decor and lighting in the currently operating locations of Early Toast restaurants
like this one at 8425 Sierra College Boulevard in Roseville
bright and offers both indoor and outdoor seating
A thriving breakfast and lunch restaurant called Mario’s Early Toast is expected to open in South Nevada County in April of next year
The location has potential according to the founder and president of the five restaurants named after him
The address of the newest Mario’s Early Toast is 10130 and 10140 Woodridge Drive in Auburn
but most people know the growing area as Higgins Corner
the gateway to South Nevada County along Highway 49 and off of Combie Road
The breakfast menu is expected to include pro-fitness and gluten free options
The lunch items pull from Astorga’s Mexican-American background and are made from a healthy balance of local ingredients
and salads are available in good-sized portions
because after all the full name for Astorga’s restaurant is Mario’s Early Toast: Mimosa House and Eatery
The hours of operation at the current locations in Granite Bay
One location will require approximately 100 employees
and Cone and Astorga plan on holding a job fair when the time is right
The interiors of each restaurant are fresh
with spacious tables and booths available for inside or outside dining
and breakfast and lunch plates are consistent from location to location
and when the location at Higgins Corner opens in April
according to CEO of Mario’s Early Toast Amanda Cone
The restaurants are popular and successful
“People need to know what the principles and morals of ownership are nowadays,” Astorga said
“Because we’re not a corporate type of restaurant
We are a community restaurant that is family owned
Astorga says Early Toast is not an Applebee’s or a Denny’s or a TGI Fridays
and that his cooks crack real eggs and use fresh ingredients
cooked as he would for his own family or friends
“Amanda (Cone) and I made a decision that when the day comes that we can’t manage our restaurants properly
then we shouldn’t be opening more restaurants,” Astorga said
“As long as we can manage the quality of our product like they say — It’s better to have quality than quantity.”
Quality of service is also important to Astorga
whose employees wear a uniform T-shirt that reads “Love people” on the back
“We also want to have the quality of the service and the love that we’re showing because if we franchise our company
We don’t want to lose all that,” Astorga said
Astorga and Cone do not intend on opening more restaurants outside of the Placer
Astorga recently purchased a home near the Dark Horse Golf Course community
and his children attend a local Christian school
“We like where we’re at because of the type of community that we have
Astorga and Cone both agree that the balance in their partnership is part of their success
“I believe that our restaurants are a platform for God’s word,” Astorga said
“I’d rather represent God than anything else in my life.”
Astorga said that Cone has strengths that balance out his weaknesses when it comes to business
“If I didn’t put my pride to the side and say
I need you to use your strengths for my weaknesses,’ then we can’t succeed,” Astorga said
“We have to learn to acknowledge what our weaknesses are and what we can do to improve.”
Astorga admits he has seen failure in business
He thanks his mother for her strong advice
and God’s grace for allowing him to heed it
“I came to the Sacramento area with a team called the Sacramento Knights in the 90s,” Astorga said
but had a lot of failures — failure after failure.”
but he made a lot of bad choices and that he was taking a lot for granted the things God was giving to him
“For a long time I took it for granted,” Astorga said of his blessings
“So I think that’s where God came into my life and said
but I want you to notice what’s happening in your life right now.’”
Astorga said that he did not keep his priorities or balance between his family and his businesses
“I was so afraid of failing in life that I was failing with my family at home — zero attention to the family
and 100 percent attention to the restaurant business
Life began to change around 2016 for Astorga when Cone came into his life as an employee for the first small Early Toast location in Granite Bay about the time he said he began to prioritize God in his life
as well as the sad news that his mother had been diagnosed with cancer
“I remember what God did from that point on; it was like He opened my eyes and He said
‘This is what I do for you.’ And he started changing my whole life
As I did that our life started changing,” Astorga said
In the short period of time of about five years now
and Astorga says that he continues to walk with the Lord
Early Toast was opened up with the intention of cheering to the blessing of each day
“Let’s cheer to the good start to the day,” Astorga said
You can toast with a glass of orange juice
everybody has obstacles to overcome… but we all need each other.”
Astorga tells his employees that the message on the back of their uniforms
some people can’t afford to go out and have breakfast
Some people only go out once a month,” Astorga said
“Please make sure that those people feel like they’re being treated special
Astorga and Cone say that as business people
they choose the location for their restaurants carefully
“I believe the Auburn location — where we’re about to open — is almost like a godsend… It hasn’t been easy
We have had all kinds of obstacles against us
but that was almost like a godsend spot for us to open there.”
To find out more about Early Toast, go to their website at https://mariosearlytoast.com/
To contact Staff Writer Marianne Boll-See, email mboll-see@theunion.com
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Aurelia Astorga Acosta,82 of Palmyra passed away peacefully on Saturday
She was born in Mexico on November 25,1941 to Galdina and Dolores (nee: Astorga) Acosta
Aurelia lived most of her life in El Paso
Texas where she was a nanny for the Lipson family and also worked as a nurse’s aide
Robert and Nadia Lipson and their children Malcom and Hilary were very special to Aurelia and they remained close lifelong friends
Aurelia will be remembered as a loving mother
Galdino (Kelly) Acosta and Emilio (Victoria) Fileto
She is the dear sister of Roberto Acosta and Guadalupe Shanklin; special aunt of Maria Dolores (Felipe) Martinez
Francisco “Poncho” (Cheryl) Lazcano
A Celebration of Life will be held on Wednesday
March 27,2024 at Southminster Presbyterian Church
Wi 53189 at 4:00 PM with a memorial service and reception to follow.
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Posted in: NBC, Peacock, TV | Tagged: the hunting party
Check out our preview of tonight's episode of NBC's Melissa Roxburgh-starring The Hunting Party Season 1 Episode 8: "Denise Glenn."
and Sara Garcia-starring The Hunting Party asset to be unleashed across our screens tonight
we have a look at what's to come in S01E08: "Denise Glenn." Bex (Roxburgh) and the team are facing a very different yet still very deadly threat when an escaped serial killer looks to pay their bloody respects to another inmate's killing style
and official image gallery for this week's chapter:
The Hunting Party Season 1 Episode 8: "Denise Glenn" – The student becomes the master when an escaped serial killer from the Pit decides to adopt another inmate's style of killing as a way of paying homage to them
with a screenplay by Keto Shimizu and David Loong
This dynamic and suspenseful thrill ride of a crime procedural follows a small team of investigators led by former FBI profiler Rebecca "Bex" Henderson (Melissa Roxburgh)
They've been assembled to track down and capture the most dangerous serial killers the world has ever seen
all of whom have just escaped from the Pit – a top-secret government prison that's not supposed to exist
As Bex races to catch these killers before it's too late
she discovers the one thing more twisted than the dangerous fugitives she's chasing is the prison itself that they just escaped from – because the Pit wasn't just a prison…
Series creator and co-showrunner JJ Bailey and co-showrunner Jake Coburn write and executive produce NBC's The Hunting Party. Thor Freudenthal is the director and executive producer, and Keto Shimizu is the writer and executive producer. The series is produced by Universal Television, a division of Universal Studio Group.
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Volume 15 - 2024 | https://doi.org/10.3389/fmicb.2024.1341701
Nature exhibits an enormous diversity of organisms that thrive in extreme environments
From snow algae that reproduce at sub-zero temperatures to radiotrophic fungi that thrive in nuclear radiation at Chernobyl
extreme organisms raise many questions about the limits of life
Is there any environment where life could not “find a way”
Although many individual extremophilic organisms have been identified and studied
there remain outstanding questions about the limits of life and the extent to which extreme properties can be enhanced
we compile the current knowledge on the bioengineering of extremophile microbes
We summarize what is known about the basic mechanisms of extreme adaptations
compile synthetic biology’s efforts to engineer extremophile organisms beyond what is found in nature
and highlight which adaptations can be combined
The basic science of extremophiles can be applied to engineered organisms tailored to specific biomanufacturing needs
such as growth in high temperatures or in the presence of unusual solvents
This will require microbes that are well adapted to chemically unusual feedstocks derived in part from highly oxidized Moon regolith or perchlorate-containing Mars regolith
in extreme bioprocessing conditions can enable robust
and low-cost synthesis of biological products
We aim to not just understand the basic science of extremophile biology
but also how that basic science supports current and future extremophilic bioengineering
The table below summarizes the current understanding of how each category of extremophile adaptation works, and whether there is precedent for deliberately endowing a new organism with this adaptation through bioengineering (Table 1)
such as low or high temperature and high radiation
and are mechanistically quite well understood
Other extremes require more complex equipment to simulate
most notably altered gravity and high and low pressure
This presents a substantial barrier for experimentation
but more research is needed to replicate and interpret results
Low gravity is an especially challenging extreme to study due to the cost and technical complexity of conducting experiments. Low gravity eliminates convection, which may substantially alter the function of microorganisms in ways that may be difficult to simulate on the ground. Low gravity simulation devices can prevent sedimentation but do not eliminate convection (Vroom et al., 2022)
and it remains unknown the extent to which these devices are a good proxy for low gravity microbial growth
To reliably investigate low gravity conditions
experiments must be done on experimental platforms in space
Studies of organisms growing on solid media under low pressure may clarify some of these issues
This is one of the examples where genetic parts from one species can improve survival for another
These strains differ in pH homeostatic mechanisms and growth pH range
though their cytoplasmic pH ranges share a common alkaline limit
Microbes can survive conditions too extreme for growth
A visualization of the thriving and survival limits of organisms
For a list of citations for each organism in each condition
Graphs indicate the limits of thriving and survival in extreme conditions of temperature
and salinity (% NaCl) for each of the five organisms
Extremophile bioengineering studies should separately characterize the contribution of gene reregulation
and the contribution of genome-level changes
Root causes of stress under extreme conditions
There are several essential cellular functions that are frequently the proximal cause of disruption in extreme conditions (A)
it can lead to disruption of other essential functions
Resistance mechanisms can protect against multiple extremes with the same root cause (C)
and stressors with opposite root causes can be easier to tolerate together than separately (D)
This may demonstrate a fundamental limit for microbial metabolism
or it may be a reflection of evolution in environments with limited variation in pH and temperature
and relative efficiency between known adaptations will improve design and bioengineering of microbes with extremophilic traits
Some trade-offs may be a reflection of the chosen selective conditions
Extremophile engineering can combine strategies logically (Figure 3). If there are known genes with known functions conferring resistance to the target extreme condition, they can be used as a starting point for engineering and directed evolution. If no usable sequence-function relationships are known, metagenomic screens and functional genomics can discover new genes with the desired function (Mirete et al., 2016)
Adaptive laboratory evolution can be used to further integrate
refine and evolve the transferred genes within the original genome
Polyextremophiles bioengineering approaches
This graph sketches the current approaches taken to evolve microorganisms
which can be combined in series to maximize the resilience achieved
Our consistently improving understanding of extremophiles and their mechanisms of adaptation
provide new opportunities to actively engineer new extremophilic capabilities
extremophile properties that are simple to simulate in the lab (especially high temperature tolerance
and salt tolerance) are thoroughly studied
and the ability to deliberately engineer these properties in target microbes has been explored
To expand our capacity to engineer biology
scientists need new tools to identify and culture unusual extremophile microbes under stringent growth conditions
Climate scientists and the biomanufacturing industry can provide the essential insights to identify the best opportunities for the engineering of extreme biology
As the field shifts to focus toward bioengineering
so too will the vocabulary — the reporting for studies must focus more directly on measuring rates of biomass or protein production under extreme conditions
rather than simply reporting binary survival or death
Unanswered questions remain about the extent to which extremophile properties can be combined
we know enough about the root causes of stress under extreme conditions to deliberately equip microbes with adaptations that are likely to enhance performance in a new extreme environment
natural organisms continue to surprise us with new mechanisms for adaptation
making it valuable to continue to sample and study new wildtype organisms from extreme environments
Further study into the fundamental limits of life
and new methods for systematic probes of these limits
will allow us to engineer custom microbes designed to thrive in the exotic
artificial niches encountered in the future
JM: Writing – review & editing
DS: Writing – review & editing
UN: Writing – review & editing
SP: Writing – review & editing
LV: Writing – review & editing
PS: Writing – review & editing
AH: Writing – review & editing
CC: Writing – review & editing
The author(s) declare financial support was received for the research
and ED were supported by the Francis Crick Institute which receives its core funding from Cancer Research UK (CC2239)
and a Steel Perlot Early Investigator Grant
UN and ED are supported by funding from The Astera Institute
AH is supported by Medical Research Council core funding (MC-A658-5TY40)
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest
All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations
Any product that may be evaluated in this article
or claim that may be made by its manufacturer
is not guaranteed or endorsed by the publisher
The Supplementary material for this article can be found online at: https://www.frontiersin.org/articles/10.3389/fmicb.2024.1341701/full#supplementary-material
High-temperature fermentation: how can processes for ethanol production at high temperatures become superior to the traditional process using mesophilic yeast
Multivalent binding of the tardigrade Dsup protein to chromatin promotes yeast survival and longevity upon exposure to oxidative damage
Non-enzymatic depurination of nucleic acids: factors and mechanisms
Exploitation of microbial activities at low pH to enhance planetary health
The first acidobacterial laccase-like multicopper oxidase revealed by metagenomics shows high salt and thermo-tolerance
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Cabello-Yeves
Marine-freshwater prokaryotic transitions require extensive changes in the predicted proteome
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Alkaline stress causes changes in polyamine biosynthesis in Thermus thermophilus
Designing the bioproduction of Martian rocket propellant via a biotechnology-enabled in situ resource utilization strategy
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Combined in-situ bioremediation treatment for perchlorate pollution in the vadose zone and groundwater
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Cyanobacteria and microalgae in supporting human habitation on Mars
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Adaptive laboratory evolution principles and applications in industrial biotechnology
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enhances salt tolerance in Escherichia coli and Brassica napus
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Engineering Siderophore biosynthesis and regulation pathways to increase diversity and availability
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Received: 20 November 2023; Accepted: 16 May 2024; Published: 05 June 2024
Copyright © 2024 Caro-Astorga, Meyerowitz, Stork, Nattermann, Piszkiewicz, Vimercati, Schwendner, Hocher, Cockell and DeBenedictis. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY)
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Therese of the Child Jesus Catholic Church
Americans Chantel Astorga and Jim Morrison
have made the first ski descent of Great Trango Tower (6,286 m) in Pakistan
The famous peak is located in the Trango massif next to Nameless Tower
They followed a meandering line down the glaciated west face in what is now one of the greatest descents in ski mountaineering since the dawn of the sport
The trio spent nearly a month at base camp waiting for the right conditions
then spent four nights at their high camp before skiing down
edge of the world kinda shit,” said Lusti
Lusti and Morrison attempted to ski Great Trango Tower last spring with Nick McNutt, but they were forced back just below the summit. “To be up there in the flow climbing, and skiing was real life magic,” said Lusti. “I am proud.”
A post shared by The North Face (@thenorthface)
Enzo Astorga felt good leaving the stage Friday night after winning the 43rd annual Marietta Times Regional Spelling Bee at the Mid-Ohio Valley Players Theater
correctly spelled “languish,” besting Charlee Harper of the Switzerland of Ohio School district for first place
Astorga said he participated in the spelling bee because he wanted to see how it was and winning felt good
“I just wanted to try it out,” Astorga said
Astorga’s mother Stacey Shimke said it is awesome that he won the regional spelling bee
“I am very proud of him,” Shimke said
Astorga will go to the Scripps National Spelling Bee which takes place from May 28 to June 3 at Gaylord National Resort and Convention Center in National Harbor
Students from 12 local school districts competed Friday in the 43rd annual Marietta Times Regional Spelling Bee at the Mid-Ohio Valley Players Theater
The theater was filled with students and their supporters to watch the showdown between the area’s best spellers from Marietta City Schools
Miller was the pronouncer and The Marietta Times staffer Candice Black was a judge
The Marietta Times Executive Editor Christina Myer emceed the bee
Marietta College has been involved in the spelling bee for years
who said he was honored to be a part of it
“I think things like the spelling bee are crucial for young people to stay engaged in learning.”
Group A participated in the first round and Group B participated in the second round
The top four from the first and second rounds went to the third round to compete for the $100 grand prize
The first round spellers were tripped by words like “financier,” “anglophile,” “meteor” and “reprieve.” It took several turns to get down to the top four spellers in round one
Mary and Kayley Scheider of Switzerland of Ohio made it to the third and final round
The second round of spellers grappled with words like “nervily,” “cinematic,” “serenade” and ‘inflammable.’ Charee Harper from St
Mica Mondo from Veritas and Ojaswi Gautam from Marietta advanced to the third and final round
The third round saw participants trying to spell “refrigerant,” “quittance” and “cabaret.” At the end of the third round the only two left standing were Astorga and Harper
They spelled back and forth for about a half an hour
sometimes getting several words right in a row
To win one child had to get a word wrong and the other had to correctly spell two in a row
That happened with Astorga correctly spelling “languish,” then Harper misspelling “chastise.”
Astorga then correctly spelled “abject,” making him the winner of the 43rd annual Marietta Times Regional Spelling Bee
The students who placed were: Enzo Astorga
Michelle Dillon can be reached at mdillon@newsandsentinel.com
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Volume 18 - 2024 | https://doi.org/10.3389/fnana.2024.1348032
The brain contains thousands of millions of synapses
synapses can be classified into two primary morphological types: Gray’s type I and type II
corresponding to Colonnier’s asymmetric (AS) and symmetric (SS) synapses
AS and SS have a thick and thin postsynaptic density
since most AS are excitatory (glutamatergic)
and proportion of the two major cortical types of synapses is critical
not only to better understand synaptic organization in terms of connectivity
several technical challenges complicate the study of synapses
Potassium ferrocyanide has been utilized in recent volume electron microscope studies to enhance electron density in cellular membranes
becomes more challenging as the postsynaptic densities become thinner with increasing concentrations of potassium ferrocyanide
Here we describe a protocol employing Focused Ion Beam Milling and Scanning Electron Microscopy for studying brain tissue
The focus is on the unequivocal identification of AS and SS types
To validate SS observed using this protocol as GABAergic
experiments with immunocytochemistry for the vesicular GABA transporter were conducted on fixed mouse brain tissue sections
This material was processed with different concentrations of potassium ferrocyanide
aiming to determine its optimal concentration
We demonstrate that using a low concentration of potassium ferrocyanide (0.1%) improves membrane visualization while allowing unequivocal identification of synapses as AS or SS
These compounds facilitate the reconstruction of cellular processes and the automatic segmentation of electron microscope images
To confirm that the SS observed with our FIB-SEM protocol (which includes potassium ferrocyanide) were indeed GABAergic
we conducted a series of experiments with different concentrations of potassium ferrocyanide
aiming to determine the optimal concentration
The main equipment used to set up the technique was as follows: Vibratome (Leica VT 1200S); Variable Wattage Microwave (PELCO BioWave Pro 36,500–230); Ultramicrotome (Leica EM UC6); Diamond Knive (Diatome Histo #5961); Sputter Coater (Quorum Emitech SC7620); and Focused Ion Beam – Scanning Electron Microscope (FIB-SEM; Zeiss
0.1 M phosphate buffer solution (PB): the solution contains 2.65 g of sodium di-hydrogen phosphate 1-hydrate (PanReac #131965) and 14 g of di-potassium hydrogen phosphate (PanReac #121512) in 1 L of distilled H2O; pH 7.4
Perfusion fixation solution: 4% paraformaldehyde (PFA; Electron Microscopy Sciences #15714-S) in PB
The solution must be prepared just before use in a fume hood
Sectioning solution: 10% sucrose (PanReac #57501) in PB
Cryoprotection solution: 30% sucrose in PB
Preincubation solution: 3% bovine serum albumin (BSA; Sigma #A4503-50G) in PB
Primary antibody solution: rabbit anti-Vesicular GABA Transporter Antibody (VGAT; Synaptic Systems #131003; 1:2000) and 3% BSA in PB
Positive control of primary antibody solution: rabbit anti-parvoalbumin (PV; ABCAM #AB11427; 1:1000) and 3% BSA in PB
Secondary antibody solution: biotinylated goat anti-rabbit IgG antibody (Vector Laboratories #BA-1000; 1:200) and 3% BSA in PB
Avidin-Biotin Complex (ABC)-based detection method: the solution contains 0.008% reagent A (Avidin; ABC Elite) and 0.008% reagent B (biotinylated HRP
ABC Elite) from the ABC kit (Vector Laboratories #PK-6100) in PB
Preincubation solution of 3,3′-Diaminobenzidine (DAB): 0.05% DAB (Sigma #D5905) in PB
Prepare immediately before use in a fume hood and protect from light
Filter with a syringe filter (Acrodisc 0.2 μm
Incubation solution of DAB: immediately before use
add 0.01% hydrogen peroxide (H2O2; Merck # 1.07209.1000) to the DAB solution described above and mix well
Second postfixation solution: freshly prepared 4% PFA
and 0.003% calcium chloride (CaCl2; Sigma #C-2661) in 0.1 M cacodylate buffer (Sigma #C0250)
Microwave postfixation solution: freshly prepared 2% PFA
and 0.003% CaCl2 in 0.1 M cacodylate buffer
First osmium solution — prepared with or without potassium ferrocyanide: 1% OsO4 (Sigma #O5500)
0.1% or 1% potassium ferrocyanide (Probus #23345) and 0.003% CaCl2 in 0.1 M cacodylate buffer
Always handle osmium and potassium ferrocyanide in a fume hood
Second osmium solution: 1% OsO4 and 0.003% CaCl2 in 0.1 M cacodylate buffer
Uranyl acetate solution for en bloc staining: the solution contains 1% uranyl acetate (Electron Microscopy Sciences #22400) in 50
Silver paint (Electron Microscopy Sciences
8 weeks old) for the technique outlined in this study
Two of these mice were utilized to assess various concentrations of potassium ferrocyanide
The remaining two mice were dedicated to VGAT validation — one with potassium ferrocyanide (0.1%) and the other without potassium ferrocyanide
All animal handling procedures were conducted in accordance with the guidelines for animal research outlined in the European Community Directive 2010/63/EU
and all procedures were approved by the Local Ethics Committee of the Spanish National Research Council (CSIC)
anesthetize the animals with an intraperitoneal injection of pentobarbital (40 mg/kg) and then intracardially perfuse with 100 mL of freshly prepared fixation solution (4% PFA in 0.1 M PB)
Postfix the brains for 6 to 16 h (overnight) in the postfixation solution (4% PFA in 0.1 M PB)
cut the brains into sections (150 μm thick) using a vibratome and collect them in a sectioning solution (sucrose 10%
in 0.1 M PB) in 24-well flat-bottom plates
This part of the procedure was carried out as follows: (1)
Postfix the sections for 48 h at 4°C in the second postfixation solution (4% PFA
0.2% GA and 0.003% CaCl2 in 0.1 M cacodylate buffer)
10 min each) in 0.1 M cacodylate buffer
(3) Perform microwave postfixation by placing the sections in the microwave postfixation solution (2% PFA
and 0.003% CaCl2 in 0.1 M cacodylate buffer) for 1 min at 50°C using the variable wattage microwave at 150 W power
Carefully add the fixative using a plastic Pasteur pipette without agitating the sections to prevent curling or folding
This step should be conducted in a fume hood
(4) Wash the sections three times in 0.1 M cacodylate buffer
(5) Osmicate the sections for 1 h in the first osmium solution in a fume hood
Slowly add and remove the osmium solution using a plastic Pasteur pipette to avoid folding or breaking the sections
sections become brittle and should be handled with care
(6) Wash the sections three times in 0.1 M cacodylate buffer
(7) Osmicate the sections again for 1 h with the second osmium solution in a fume hood
Using a variable wattage microwave at 50°C
dehydrate the sections in a series of uranyl acetate solutions
starting with 50% ethanol and continue with a solution of 1% uranyl acetate in increasing ethanol concentrations (50–70%-90–100%)
finishing with absolute ethanol and clear three times in acetone (40 s each step)
with a variable wattage microwave (under vacuum conditions at 70°C
1 part acetone — followed by a solution of 4 parts Araldite and 1 part acetone and finishing with a 3-step embedding with pure Araldite
Store the sections embedded in pure Araldite at 4°C for 8–16 h (overnight)
Temper the sections for 30 min at room temperature
Change the Araldite to a freshly prepared mixture and leave the sections to rest for three to 4 h
Flat-embed each section by placing them between two silicone coater slides covered with a transparent film for 48 h at 60°C
To ensure that the flat-embedding is homogenous
the flat-embedded sections must be examined and photographed under an optical microscope to select the region of interest
trim and glue the region of interest (in this case: the primary somatosensory cortex) with cyanoacrylate onto a blank Araldite block
Use a microtome and a diamond knife to obtain serial semithin sections
Photograph the surface of the block to establish landmarks (such as blood vessels or other morphological features)
which will later be used to precisely locate the area to be imaged with the FIB-SEM
Once the region of interest has been selected in the Araldite block
mount it on an SEM specimen stub with a conductive carbon sticker (Electron Microscopy Sciences
the block must be covered with silver paint
It is important not to cover or spill silver droplets on the upper surface of the block where the specimen is located
the base of the block must be carefully painted to ensure electrical continuity between the Araldite block and the specimen stub
Allow the paint to dry for at least 24 h in a vacuum desiccator
Charge dissipation from the upper surface of the block is achieved by gold–palladium sputter-coating for 60 s
or other metals are also suitable for sputter coating
but care must be taken not to cover the specimen with a layer that is too thick as this might obscure surface details
The surface of the block is then photographed with the SEM using the secondary electron detector
The landmarks in the section that were previously identified with the optical microscope (mainly small blood vessels) are also visible with the SEM
so the region of interest can be precisely located
A viewing trench is then excavated with the FIB using a 7 nA milling current
to provide visual access to the region that we plan to image
The front face of this trench must be located close enough to the target to allow its identification
The ion beam and the electron beam can be used simultaneously
so it is possible to monitor the progression of the trench as it is being excavated
We then use a smaller FIB current (700 pA) to progressively mill the front face of the trench in steps of 20 nm
we remove 20 nm of material with the FIB
and then use the SEM to take a microphotograph of the freshly milled surface
the angle between the SEM and the FIB is 54°
so the angle of incidence of the SEM on the surface to be imaged is 36°
The resulting perspective deformation is automatically corrected by the microscope software during acquisition (SmartSEM 6.02; Carl Zeiss Microscopy Ltd.)
so no distortion is present in the final images
Since the milling/imaging cycle can be fully automated, serial images of the target are obtained. We routinely use a milling step of 20 nm (equivalent to section thickness) and a resolution in the X-Y plane of 5 nm/pixel, so the actual voxel size is 5 nm × 5 nm × 20 nm (Merchán-Pérez et al., 2009)
Other resolutions and milling steps can also be used
and the length of the series of sections can be selected according to the researcher’s needs
we primarily use synaptic membrane densities for synapse counting
especially when accompanied by synaptic vesicles near the presynaptic density
irrespective of the angle of section through which the synaptic junctions are viewed (i.e.
whether a synaptic cleft is evident or not)
the identification of synapses relies on examining all serial sections where each individual synapse is visible
the 3D course of the axons can be followed within stacks of sections to confirm the nature (AS or SS) of the synapses established in all their synaptic contacts
We conducted pre-embedding immunocytochemical labeling of VGAT in fixed brain tissue sections and subsequently processed the tissue for FIB/SEM
with the following modifications to investigate the synaptic contacts established by VGAT-positive boutons
150 μm-thick sections are cryoprotected using sucrose 30% in 0.1 M PB overnight
Permeabilize sections using liquid nitrogen
Place two to three brain sections in 5 mL Eppendorf tubes
remove the remaining sucrose solution and ensure that the sections are distributed along the Eppendorf tube surface
Immerse the Eppendorf tubes in the liquid nitrogen solution for 2 or 3 s
Immediately after the cryopermeabilization
Once the sections return to their usual transparent appearance
slowly add 0.1 M PB (4°C) to the Eppendorf tube and store again at 4°C
Carefully place the permeabilized section in 24-well flat-bottom plates filled with 0.1 M PB
10 min each) in 0.1 M PB
pre-incubate the sections with the preincubation solution (3% BSA
in 0.1 M PB) for 2 h under agitation at room temperature
Incubate with the primary antibody incubation solution (rabbit anti-Vesicular GABA Transporter Antibody
in 3% BSA - 500 μL/section) for 48 h under agitation at 4°C
A positive control is recommended to exclude any possible miscoupling during the antibody reaction
Allow the sections to temper for 10–15 min at room temperature
Incubate the sections with the secondary biotinylated antibody solution (biotinylated goat anti-rabbit IgG antibody
for 2 h under agitation at room temperature
10 min each) with 0.1 M PB
Incubate the sections with the Avidin-Biotin Complex (ABC)-based detection kit to amplify the secondary antibody signal
for 1 h under agitation at room temperature
Wash three times in 0.1 M PB at room temperature
pre-incubate the sections in DAB solution without H2O2
incubate in DAB solution with H2O2 for 1 min
so visually monitor the color of the sections until the precipitate has reached the desired intensity
This can also be checked using an optical microscope
Stop the reaction by washing the sections three times (10 min each) in 0.1 M PB
follow the processing procedure for electron microscopy: postfixation and osmication are performed as described above
but adding 7% glucose (Merck #1.08337.0250 in the first and second osmium solutions to avoid excessive darkening of the sections)
The first osmium solution contains 0.1% potassium ferrocyanide
en bloc staining and embedding are performed as described above
the quality of the EM images remained excellent
and AS and SS could be clearly distinguished through serial sections
we unambiguously identified 88 SS and 836 AS
Images obtained by FIB/SEM showing the neuropil of the somatosensory cortex of mice
The sample was treated with 1% potassium ferrocyanide and not permeabilized with liquid nitrogen
(A) Low-magnification FIB/SEM image from a stack to illustrate the good quality of the EM image
(B–I) Various examples of synapses on different dendritic spines
AS are challenging to identify because the postsynaptic densities are relatively thin
Scale bar (in I) indicates 468 nm for (A)
The sample was treated with 0.1% potassium ferrocyanide and not permeabilized with liquid nitrogen
an example of a low-magnification FIB/SEM image from a stack highlights AS and SS synapses with green and red arrowheads
(B–I) Various serial sections at higher magnification of the same SS (red arrow)
(J–M) Various serial sections of the same AS (green arrow) from the image stack
The section number is indicated in the top right-hand corner of each image
Scale bar (in M) indicates 468 nm for (A)
The red arrow indicates a VGAT-positive terminal forming an SS (magnified in C)
AT indicates another VGAT-positive terminal (magnified in D)
and double asterisks indicate neuropil magnified in E
(C) Higher magnification of the VGAT-positive terminal forming an SS (red arrow)
and the VGAT-positive terminal (1) forming an SS with the cell somata in further serial sections shown in B
(D) Example of a VGAT-positive terminal in which the intensity of the staining decreases as the distance to the surface of the section increases
(E) Example of a VGAT-negative terminal forming an AS
Scale bar (in E) indicates 5 μm for (A)
800 nm for (B) and 370 nm for (C–E)
These VGAT-positive terminals established SS, while VGAT-negative axon terminals established AS (Figure 4)
AS (A) and SS (B) identification from FIB/SEM images in VGAT-immunostained tissue permeabilized with liquid nitrogen and treated with 0.1% potassium ferrocyanide
Sequence of FIB-SEM serial images of an AS (C–J) and an SS (K–R)
Numbers on the top right of each panel indicate the number of each section from the stack of FIB/SEM images
Synapse classification was performed based on the thickness of the PSD and the VGAT-positive labeling of the presynaptic terminal through the examination of full sequences of serial images
Green arrows indicate the beginning (C) and the end (J) of the AS
Red arrows indicate the beginning (K) and the end (R) of the SS
Note the VGAT-positive presynaptic staining on the SS
Scale bar (in R) indicates 250 nm for (A,B)
Identification of SS on neuronal soma from FIB/SEM images in VGAT-immunostained tissue permeabilized with liquid nitrogen and treated with 0.1% potassium ferrocyanide
White asterisk indicates the neuronal soma
(B–I) sequence of FIB-SEM serial images of an SS established on the neuronal soma
Red arrows indicate the beginning (B) and the end (I) of the SS
Scale bar (in I) indicates 520 nm for (A)
We analyzed 266 serial images in the neuropil within the penetration zone of immunostaining, corresponding to 4,184 μm3, and identified 265 AS and 23 SS. All SS (8% of total synapses) were formed by VGAT-positive terminals, while all AS (92%) were established by VGAT-negative terminals (Figure 6)
Identification and segmentation of synapses
(A–D) Screenshots of the EspINA software user interface
the sections are viewed through the xy plane (as obtained by FIB/SEM microscopy)
are also shown in adjacent windows (on the right)
(B) 3D view showing the three orthogonal planes and the 3D reconstruction of AS (green) and SS (red) segmented synaptic junctions
(C) 3D reconstructed synaptic junctions of both AS and SS
(D) 3D reconstructed synaptic junctions of SS
Scale bar (in D) indicates 2 μm for (B–D)
This aligns with the findings of Turégano-López et al. (2021), who studied VGAT-positive boutons using FIB/SEM without the use of potassium ferrocyanide. As depicted in Figure 7, the morphology of the synaptic junctions formed by VGAT-positive boutons in this material (without potassium ferrocyanide) is similar to those observed in brain sections using 0.1% potassium ferrocyanide (Figure 4)
it is recommended to use the latter concentration of potassium ferrocyanide
after the first fixation in paraformaldehyde
sections are postfixed in solutions containing glutaraldehyde
synaptic organization datasets with incorrect assumptions regarding SS identification could introduce an important source of bias
The fact that only VGAT-positive boutons establish SS corroborates the widely accepted correspondence between SS and inhibitory synapses
as well as between AS and excitatory synapses in the cerebral cortex
The original contributions presented in the study are included in the article/Supplementary material
further inquiries can be directed to the corresponding author
The animal study was approved by the European Community Directive 2010/63/EU and the Local Ethics Committee of the Spanish National Research Council (CSIC)
The study was conducted in accordance with the local legislation and institutional requirements
The author(s) declare that financial support was received for the research
This work was supported by the following Grants: PID2021-127924NB-I00 funded by MCIN/AEI/10.13039/501100011033; CSIC Interdisciplinary Thematic Platform - Cajal Blue Brain (PTI-BLUEBRAIN; Spain); and CIBERNED
Research Fellowships funded by MCIN/AEI/10.13039/501100011033 for NC-A
We would like to thank Nick Guthrie for his excellent editorial assistance
The author(s) declared that they were an editorial board member of Frontiers
This had no impact on the peer review process and the final decision
The Supplementary material for this article can be found online at: https://www.frontiersin.org/articles/10.3389/fnana.2024.1348032/full#supplementary-material
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Quantitative distribution of GABA-immunopositive and-immunonegative neurons and synapses in the monkey striate cortex (area 17)
The effects of aging on neuropil structure in mouse somatosensory cortex—a 3D electron microscopy analysis of layer 1
Three-dimensional synaptic Organization of Layer III of the human temporal neocortex
3D synaptic organization of layer III of the human anterior cingulate and temporopolar cortex
A calcium-based plasticity model for predicting long-term potentiation and depression in the neocortex
Mapping synapses by conjugate light-Electron Array tomography
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Dendritic spines of CA 1 pyramidal cells in the rat hippocampus: serial electron microscopy with reference to their biophysical characteristics
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Comparative ultrastructural features of excitatory synapses in the visual and frontal cortices of the adult mouse and monkey
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cognition and emotional context: hippocampal
and Amygdalar axons show unique interactions in the primate thalamic Reuniens nucleus
Cell-type specific innervation of cortical pyramidal cells at their apical dendrites
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Dually innervated dendritic spines develop in the absence of excitatory activity and resist plasticity through tonic inhibitory crosstalk
Serial section scanning electron microscopy of adult brain tissue using focused ion beam milling
Large volume Electron microscopy and neural microcircuit analysis
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Anterior cingulate synapses in prefrontal areas 10 and 46 suggest differential influence in cognitive control
Specialized prefrontal auditory fields: organization of primate prefrontal-temporal pathways
Specificity in inhibitory systems associated with prefrontal pathways to temporal cortex in Primates
Diversity of glutamatergic synaptic strength in lateral prefrontal versus primary visual cortices in the Rhesus monkey
Montero-Crespo
Three-dimensional analysis of synaptic organization in the hippocampal CA1 field in Alzheimer's disease
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The use of lead citrate at high pH as an electron-opaque stain in electron microscopy
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Ishida AT fixation strategies for retinal immunohistochemistry
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Merchan-Perez A and DeFelipe J (2024) Unambiguous identification of asymmetric and symmetric synapses using volume electron microscopy
Received: 01 December 2023; Accepted: 08 March 2024; Published: 05 April 2024
Copyright © 2024 Cano-Astorga, Plaza-Alonso, Turegano-Lopez, Rodrigo-Rodríguez, Merchan-Perez and DeFelipe. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY)
*Correspondence: Javier DeFelipe, ZGVmZWxpcGVAY2FqYWwuY3NpYy5lcw==
†These authors have contributed equally to this work
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Chantel Astorga takes a stoked selfie during her solo ascent of Denali’s Cassin Ridge
Chantel Astorga became the first woman to solo the Cassin Ridge on Denali (20,310′)
completing the route in just 14 hours and 39 minutes
whittling the time down to 8:07 in the summer of 2018
That time alone in the mountains has always been powerful for me in ways I can’t explain
I guess I simply just wanted to feel what it was like to be alone on a technical route in the big mountains and the Cassin Ridge seemed like a perfect fit.”
her initial plan was to spend a few weeks at the 14,000-foot camp on the West Buttress of Denali
Originally she intended to make two trips from there to the West Buttress summit ridge
Astorga carried a 2.5-pound lightweight bivy kit
a single fuel canister and a lightweight rescue beacon
She also brought a 40-meter piece of 5mm rope and two ice screws in case of retreat
she climbed in a pair of lightweight ski-mountaineering boots with extra-warm liners
Astorga left 14K Camp and ascended 2,000 feet to the West Rib
Then she made the first recorded ski descent of the Seattle Ramp
blue ice and crevasses that pushed Astorga to the edge of her comfort zone
Astorga drops in to greet some friends: “I skied into the ‘schrund to say hello after descending the Seattle Ramp and then continued on my way,” she said
Astorga can be seen as a tiny dot on the flanks of Denali
“I arrived at the base of the climb in the early afternoon as the clouds gave way to sunshine and slept until 4 a.m
I woke up in go-mode and things were feeling right
mixed climbing through the Japanese Couloir and the First and Second Rock Bands
the same party that had come down the Seattle Ramp had also put in a nice boot pack on the lower slopes of the route
snow had blown in and she had to route find again
She had been on the upper slopes in years past
once via the Denali Diamond and once via the Slovak Direct
She went into cruise control and punched it for the top
she quickly made her way back to 14K Camp in 2.5 hours via the West Buttress
“I think Chantel’s solo ascent is very cool,” Haley said
“It is the first female solo of arguably the most iconic alpine climb on the continent
A route that requires a real big-mountain skillset to solo
It’s notable how quickly she climbed the route
She did it faster than the Mugs Stump record that stood for nearly 20 years.”
noted that Astorga’s ascent “is one of the most impressive things done in the Alaska Range.”
When asked what the highlights from the climb were
“I think just being alone was amazing for me
It’s not something I’d want to do often
as I really enjoy sharing those experiences with a good friend
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HEIGHT OF LAND PUBLICATIONSAlpinist • Backcountry • Cross Country Skier • Mountain Flyer
and Chantel Astorga successfully completed the first-ever ski descent of Great Trango Towers in Pakistan on May 9
The vertical faces of Trango Towers are among the world’s tallest cliffs
and the climb is considered one of the world’s hardest
The team around Jim Morrison attempted the descent on skis last year but had to abandon the quest after three failed attempts
The Trango Towers lie on a northwest to southeast-running ridge in Pakistan
Two glaciers enclose the range: Trango Glacier to the west and the Dunge Glacier to the east
The team around Morrison climbed the Great Trango massif which has three peaks
The mountain range was first climbed in 1977 but the majority of succesful ascents occured in the late 1980s and early 1990s
The expedition under Jim Morrison’s leadership was sponsored by The North Face
“We sent it,” the American ski mountaineer shared on Instagram
“I shared this summit view of the Karakoram’s highest and most prolific peaks with two amazing women
Christina Lustenberger and Chantel Astorga
It’s not lost on me that these two badass women were big inspirations to Hilaree
and I felt her spirit strongly as we climbed onto the precarious summit.” Morrison had lost his life partner Hilaree Nelson during their ski descent of Manaslu in 2022
The pair had been the first people to ski from the 27,940-foot summit of Lhotse in 2018
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and optimistic individual seeking better ways to do business.”
I used to pretend play to be a banker: I would put on my blazer (the only one I had) along with my most professional-looking shorts
grabbed an empty cardboard box to use as a desk
and served my only imaginary customer – Ms
Vortex (inspired by a character from the Jimmy Neutron cartoon show)
Most Recent Employer and Job Title: In-house lawyer (young professional program) at Central American Bank for Economic Integration (CABEI)
what are the first things that come to mind
How have your experiences with the Mendoza program thus far reinforced or upended these early impressions
Mendoza is a strong believer in the good in business
motivating each of the students to go beyond what the business customs might be to find better ways – often through collaboration and teamwork – to have a stronger positive impact in the local and global communities
The school offers core and elective courses related to ethical and inspirational business leadership
creating a sense of camaraderie within the cohort
Incorporating a multi-cultural and multi-background learning team from day one
the program is able to shape competent leaders with a global vision who maximize well-being to all the stakeholders of a business
what was the key part of the Mendoza MBA programming that led you to choose this business school and why was it so important to you
In addition to the variety of majors available to the MBA students to choose from
Mendoza’s focus on experiential learning was a key driver of my decision
the possibility to participate in the Business on the Frontlines course to understand the real-world effects of business decisions
and the international immersion experience to see business from a different perspective
are important aspects of a well-rounded leadership formation program
club or activity have you enjoyed the most so far at Mendoza
The course I have enjoyed the most so far due to its different approach to leadership is Leading People and Teams with Professor Colquitt
The course features a series of reading assignments on scientific research that offer strong evidence of the science behind leadership
Through this and lectures that provide insights on how to apply leadership principles to the organizational context
the course grants powerful tools that can be used to leverage human resources capabilities in the best possible way
I have truly enjoyed the learn-by-doing approach of the courses in Mendoza: The in-class group problems in courses like Managerial Economics and Financial Accounting
and online marketplace simulations in Marketing Management
are the most useful way to learn complex conceptual and theoretical aspects of the lectures
Describe your biggest accomplishment in your career so far: During my time at a development bank
I had the opportunity to lead a pilot program funded by an important multilateral organization that would grant credit loans for technological improvement on small and mid-sized farms
accompanied by technical assistance to implement better farming practices
we achieved outstanding results for this program that would open channels for similar programs in the future: The program had more than 3,000 beneficiaries with an average loan of six-thousand dollars
significant improvement of productivity indicators
and a default rate lower than the average in the national financial system for the industries financed
Describe your biggest accomplishment as an MBA student so far
As someone with no finance education background – and someone who was honestly afraid of how I would perform in this subject area – being able to obtain the highest letter grade possible for the Finance and Financial Accounting courses and receiving emails from professors congratulating me on my performance in the finals is something that I’m very proud of
It motivates me to keep working as hard as I can to succeed in every challenge I might encounter in my academic and professional life
Mendoza is known as a purpose-driven MBA program that asks students to “Grow the good in business.” What is your mission and how has Mendoza been helping you realize it
I have seen first-hand from past and current experiences in my home country how businesses determine the faith of a society (for better or for worse)
This motivated me to do good business – not only in terms of profitability
but also in terms of contribution to employees
although I knew what I wanted to do and what my life-purpose was
I didn’t know how to put my ideas into practice; thanks to the Mendoza program I have been able to understand how businesses impact society
what better practices can be implemented in the business setting to make everyone better off by the existence of your business
and how to get other people as motivated as you are about an idea
What advice would you give to help potential applicants gain admission into the Mendoza MBA program
Explore and try to define what your purpose is and how Mendoza fits in that purpose; if you are able to prove that you know who you are and have a clear goal in mind for your career path
Mendoza will be more than willing to help you build the necessary skills for your professional life
DON’T MISS: MEET NOTRE DAME MENDOZA’S MBA CLASS OF 2023
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This is a developing story and will be updated as more information becomes available
District Attorney Gerald Byers will not prosecute the man who stopped a fatal attack on a Las Cruces Police officer
Issiah Astorga, 29, shot and killed Armando Silva during the attack on Las Cruces Police Officer Jonah Hernandez Feb
who was responding to a report of a trespasser in the 300 block of South Valley Drive
investigators presented facts of the case to the Third Judicial District Attorney’s Office on Feb
More: In wake of slain Las Cruces Police officer, Mayor Eric Enriquez prioritizes outreach court
Astorga is represented by Luis Robles, an Albuquerque attorney. A news release from the Las Cruces Police Department said Astorga made the decision to intervene in Silva's attack on Hernandez when he witnessed the altercation
According to a statement from Astorga that was released on Thursday
he saw that Silva had control over the officer
That prompted him to use a personal handgun that was in his vehicle and run toward the altercation
"Due to the severe bleeding from the officer
I knew that the individual approaching me had a weapon
I fired my handgun," Astorga said in a released statement
I tried my best to aid the injured officer."
The woman Astorga is referring to was not identified by police
More: LCPD Officer Jonah Hernandez to be buried in El Paso Feb. 21
called for help while he attempted to aid the officer after shooting Silva
a tragedy occurred that should have never happened," Astorga said in a statement
had the burden of being a part of that tragedy
"I truly wish that the events that happened that day never occurred
If I could go back in time and prevent any of this from happening
and every single person who has been affected
we can help each other to prevent anything like this from ever happening again."
Astorga called the incident a "traumatic event" and asked for privacy to focus on his mental health and to move forward
"Please understand that me and my girlfriend need time to cope with what happened and heal from it," Astorga said in the statement
"I know that there will always be questions that come from a situation like this."
Las Cruces Police Chief Jeremy Story read Astorga's statement in a Facebook post on Thursday
Watch the full statement here.
Jessica Onsurez can be reached at jonsurez@gannett.com. Follow her on X at @jussGREAT.
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The summit of Great Trango Tower was bleeding close
Christina “Lusti” Lustenberger
and Chantel Astorga would only be halfway to their goal — to make a historic first ski descent of this revered granite tower
at the top of the ridge leading to the summit
and Nick McNutt’s first attempt to ski the hanging glacier on Great Trango
This time, however, The North Face athletes would not be stopped so close to their goal
and organizing logistics; they had traveled across the world and waited at high camp for 4 days for the perfect weather window
When the athletes reached the high crevasse — the point that had turned them around a year prior — it was clear they would make it past
They crossed over and continued up to the final obstacle
Lustenberger and Astorga belayed him across and watched as he climbed to the peak
“Watching him reach the summit was pretty amazing,” Lustenberger told GearJunkie
and it was uplifting to see him stand on top after so much hard behind him.”
Lustenberger and Astorga then followed Morrison across
But they hadn’t done anything historic yet
Many have climbed Pakistan’s Great Trango Tower over the years
no one had successfully skied from the peak’s lofty summit
These athletes had come a long way to change that
Great Trango Tower’s imposing granite cliffs
and technical pitches might look unskiable to the average onlooker
Why wouldn’t you want to ski it?” Lustenberger said when asked what inspired them to pursue this first descent
“Some wild terrain just draws you in with such immense curiosity.”
she and Morrison almost immediately started planning their second
and the duo filled his spot on the team with another TNF athlete
“I’ve always wanted to ski something beautiful in the Greater Ranges of the world,” Astorga said
“When I saw a photo of the ski line [Morrison and Lustenberger] had dreamt up
I was immediately drawn to the beauty of it.”
straight down the gut of the Trango Tower’s massive hanging glacier
threading a narrow ridgeline over stomach-churning cliffs
It would be well over 4,000 feet of vertical descent
It took the athletes days to reach the base of the mountain
and prepared to make the historic first descent
Lustenberger said she had stomach sickness and started feeling symptoms of HAPE
The three alpinists took the same approach most climbers use to access Great Trango Tower
But they wouldn’t ascend the sheer rock wall with all their ski equipment
So they followed the same route up that they’d descend
and breaking trail through waist-deep snow
the crevasse wasn’t as severe of an obstacle this second time around
there wasn’t much to stop them from reaching the top
“The most exciting moment for me was when we climbed toward the summit
and I realized we were going to pull it off,” said Morrison. “It had been such a long time in both planning and training mixed with so many failed attempts that the success of making it to the top felt really sweet.”
Morrison said he reserved the full celebration for later
Their mission wasn’t in the bag yet; they still had to ski down
it was late afternoon on top of Great Trango
and it was almost golden hour in the Karakoram mountain range
Morrison and Lustenberger slashed their first few turns from the 20,623-foot summit in what Morrison described as “sun-affected powder,” while Astorga chose to rappel down the first section
they carefully navigated the glacier’s narrow summit ridge on their skis
and crusty as they descended — but it was stable the whole way
“The ski descent was amazing,” Lustenberger said
Morrison and Astorga agreed — it was a really good run at the end of a very long day
A post shared by The North Face (@thenorthface)
When they finally arrived back at high camp
Morrison said it was close to midnight when they’d finished eating dinner — and the next morning
they still had a 20-mile hike out to look forward to
The Great Trango Tower had officially been skied for the first time in human history
all three athletes are already looking forward to the future — toward new adventures
They all want to continue pushing their sports forward and testing their limits
an alpine skier who considers herself more of a climber
said this mission inspired and motivated her to grow in new ways as a skier
“I knew skiing with Lusti and Jim in the bigger mountains would likely open my mind to new ideas
While she acknowledges that this was Lustenberger and Morrison’s vision
she was grateful to have had her part in it
For Lustenberger, the most powerful part of this journey was watching her friend, Morrison, who lost his climbing and life partner, Hilaree Nelson, in a tragic ski accident in the Himalayas last year
make such a triumphant return to the top of the world
for him to have that and to hold Hilaree’s spirit with him up there,” Lustenberger said
All three athletes have new adventures lined up already for summer and fall
Astorga will be going to India to do more alpine climbing
Lustenberger is already dreaming up her next ice and mixed climbing adventure
And Morrison is excited to continue skiing in the world’s highest and most remote places
“I’ll just embrace summer and walk uphill a lot.”
Hilaree Nelson and team climb and ski Baffin Island
and professional misfit based out of the Roaring Fork Valley of Colorado
Will grew up on the Western Slope of the Rocky Mountains
reenacting “Survivorman” episodes and studying books like “Hatchet,” “The Monkey Wrench Gang,” and “Into the Wild.” He’s written on topics ranging from cannabis to local news
If he’s not banging stories out on his computer
you’ll probably find Will skiing or mountain biking (depending on the season) — or drinking beer at some remote craft brewery
Be one of the first to try our new activity feed
Chantel Astorga and Anne Gilbert Chase’s ascent of the Slovak Direct—from June 2 to 5—marks the first female ascent of the 9,000-foot route
and the second time an all-female team has climbed an Alaska Grade VI
Alaska—On day two of their four-day ascent of Denali’s Slovak Direct (5.9 X M6 WI6+
Chantel Astorga and Anne Gilbert Chase needed to stop and rest
They aimed for a small perch—right before the route’s technical crux—where one
maybe two teams had previously spent the night
When they finally reached the bivy spot at 15,200 feet
they found it was merely a steep ramp that they had to hack out with their ice tools for hours; even then there was barely enough space for them to sit on the slanting bench
under continual dusk so bright it blended out the stars
They passed the time sitting upright and sharing a single sleeping bag with a tent wrapped over them as they looked out over the Alaska Range
“We had to stay clipped in as we were sliding downhill,” Chase said
That night winds increased above them on the mountain
we were able to warm up and wait for the winds to die down,” Astorga said
After breakfast Astorga led the crux pitch
a long finger-width crack on a vertical wall
where she used a combination of free climbing and pulling on cams to ascend a crack
“It would probably go at 5.11 fingers if you were in rock shoes,” she says
“but it’s very difficult at 15,000 feet with ice tools and crampons.”
with thin overhanging ice where it was hard to get good gear placements and you just had to climb through it.”
After the technical climbing on the Slovak Direct ended at 16,500 feet
Astorga and Chase un-roped and followed the Cassin Ridge for another 4,000 feet to reach the summit
was at 13,400 feet where they took shelter in a bergschrund near a hanging glacier
on the lower-angle Cassin Ridge; it was there that Astorga put a hole in her sleeping pad
their faces were puffy from a combination of exhaustion
Chase remembers Astorga nodding off for 30-second “power naps” every few minutes
This is the route’s ninth ascent and first all-female ascent
Chase says of the nearly two-mile-long route: “It’s extremely steep with a lot of mixed climbing and a bit of everything
There is also a lot of water ice up to WI6 and difficult rock.” She says much of the route has M5 and M6 terrain
“Though not extremely hard off on the ground
climbing at 16,000 feet with runouts and with a pack on added to the challenge.”
and in 2010 she’d skied from the summit down the West Ridge
Chase had summited the mountain four times
Astorga guided on Denali from 2008 to 2011 and Chase guided Denali from 2010 to 2012
their ascent of the Slovak Direct marks only the third time they’d climbed together
Today Astorga works as an avalanche forecaster in Lowman
Idaho; Chase is a registered nurse in Bozeman
Their first climb together was an attempt on the Slovak Direct in June 2017
where they made it 3,000 feet up before retreating
minus 20 [Fahrenheit] at 14,000 feet,” Chase said
“the weather fully shut down and we were hit with snow and spindrift.”
Because they left so much of their rack bailing down the enormous route
their trip was over; they skied out and caught a plane
Their next climb was from September 29 to October 2
when they made the first ascent of Obscured Perception (1,400m
VI WI5 M6 A0 70° snow) on 6,596-meter Nilkanth in India’s Central Garhwal Himalaya
they partnered with Chase’s husband Jason Thompson
Chase and Astorga’s ascent marks the second time an Alaska Grade VI (a high-commitment route with hard
sustained climbing over 14,000 feet) has been climbed by an all-female team
The first female team to attempt an Alaska Grade VI was when Sue Nott and Karen McNeill attempted the Infinite Spur on 5,303-meter Mount Foraker (VI 5.9 M5 AI4; Lowe
Astorga and Jewell Lund became the first women to climb an Alaska Grade VI when
they made a five-day ascent of the Denali Diamond (Alaska Grade 6
and František Korl made the first ascent of the Slovak Direct over 11 days in 1984
could we pitch our tent; on all other nights we had to hack out bivouac shelves,” Blažej Adam wrote in the American Alpine Journal
Authoring the climb required 40 ice pitons and 150 rock pitons
Kevin Mahoney and Ben Gilmore made the second ascent over seven days in 2000
and Mark Twight climbed the Slovak Direct over 60 hours
making 15 starts including the first of his career in the season opener on August 31 versus Indianapolis
Astorga’s lone goal of the season came as the game-winner on September 10 versus Marygrove
while he also added a pair of assists on the season
2016: Finished the season in a three-way tie for fourth on the team with five points (2g-1a)
Named the GLIAC Offensive Player of the Week on Sept
27 after leading the Wildcats to wins over No
12 Tiffin and Findlay; he netted the game-winning goal in both games and also notched an assist
Before NMU: Astorga played for Lexington High School his freshman and sophomore years
reaching the state quarterfinals and winning a district title as a freshman
He moved to Central Township High School for his last two seasons
earning athletic scholar accolades both years and finishing third on the team in goal scoring as a senior
Astorga captained his International Soccer Academy team in 2013 and his Chicago Fire Juniors South squad in 2015
He helped International Soccer Academy win three-straight league titles between 2011 and 2013; his International Soccer Academy placed third in the Illinois State Cup in 2012 and second in 2013
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