Ancient DNA from Shimao reveals local origins, broad prehistoric connections, a patrilineal social structure, and gender-specific patterns of human sacrifice. At Shimao, a vast stone-walled settlement in northern China, ancient DNA is filling in details that archaeology alone could not fully resolve. The genetic evidence is helping trace where the people of this late Neolithic [...]

A new study suggests that sleep habits may influence how certain genetic variants affect early brain and cognitive changes associated with Alzheimer’s disease. Sleep may do more than help the brain recover from a busy day. New research suggests it could also influence how certain genes shape the earliest brain changes associated with Alzheimer’s disease. [...]