HealthHow bad is modern life for our body clocks – and what can we do? Modern life disrupts the circadian rhythms controlling our biology – increasing our risk of developing conditions ranging from diabetes to dementia. Lynne Peeples's new book The Inner Clock explores and offers solutions Culture
HumansWhen did human ancestors start walking on two legs? Anthropologists have been arguing for 20 years about whether Sahelanthropus, a hominin that lived about 7 million years ago, was one of the first bipedal apes News