HumansHow World War Zero wrecked three Bronze Age civilisationsThe collapse of three civilisations has long been a mystery. Eberhard Zangger thinks he has the answer, but is he the victim of an elaborate hoax? Features
HealthStem cells in the brain's hypothalamus help mice stay youngA cluster of brain stem cells fight ageing in mice. They may do this by releasing molecules of micro-RNA – a process that anti-ageing drugs may be able to mimicNews