Will a human ever celebrate a 150th birthday? You bet, says Stephen Austad, a biology of ageing researcher at the University of Alabama at Birmingham. Austad is so sure that life expectancy is poised ...

Over the course of our long, complicated evolutionary history, humans have seen our brains triple in size, now weighing in at roughly three pounds on average. At some point along the way, humans ...

About 70,000 years ago in Africa, humans expanded into more extreme environments, a new study finds, setting the stage for our global migration. By Carl Zimmer Geography is one of the things that sets ...