In “Replaceable You,” Mary Roach describes mind-boggling efforts to replace human body parts—and why it’s proven to be so ...

From periods of rapid aging in our 40s and 60s to ancient brains that don’t decompose, here are some of the year’s most intriguing stories about human biology It can sometimes feel like health ...

Spaceflight is accelerating the ageing process in blood-forming stem cells vital to human health, according to a new study analysing samples from four SpaceX resupply missions to the International ...