The current practice of freezing embryos—used to assist reproduction in humans or animals or to conserve endangered species—routinely causes ice to form within the cells, ripping through cell ...

Modern humans may indeed have wiped out Neanderthals – but not through war or murder alone. A new study suggests that when the two species interbred, a slow-acting genetic incompatibility increased ...

For all the ambition packed into humanity's plans for Mars colonies, lunar bases, and permanent off-world settlements, one fundamental question has quietly gone unanswered: can humans actually ...