Admire the winter sky at Winter Star Nights 2024 Letter: We may need new names for autism (2) Letter: Not all is lost when code-busting computers emerge Would whisking cold water up from the ocean depths help with warming? Do I create gravitational waves when I crash onto the sofa? Why does light reflect in a mirror but go straight through glass? (continued) Why do wet dogs like to shake themselves dry beside people? (continued) What is the smallest body of water in which tides can be detected? In fizzy drinks, why do only larger bubbles oscillate as they rise? Letter: Red street lamps may not be so great, after all