The long read: For tens of thousands of years, these Palaeolithic artworks were unseen. When they were rediscovered, onlookers marvelled at their vivid beauty. One of the world's leading experts took me up close ...
Ian Sample talks to Prof Maiken Nedergaard about her groundbreaking work on the brain's waste-disposal system and how subsequent research is building a picture of sleep as anything but a quiet, inactive state ...
It's natural to focus on breakthroughs, but there are many challenges in Britain and around the world. There is no magic bullet, but there's room for optimism, says Devi Sridhar, chair of global public health at the University of Edinburgh ...