Humans living in space for months, years, or even generations will need to navigate sex in a zero-gravity world.

As a quartet of astronauts make their way to the far side of the Moon, far-fetched notions of human colonies on the satellite or even Mars - a three-year return trip - are again getting an airing.

If the government confirms nonhuman intelligence, psychological research offers clues about the range of ways humans might ...

What would they think of us? It’s a question that can produce some, well, uncomfortable answers if you happen to be an ...

Between 2 million and 3 million years ago, humans appeared in Africa — but identifying them in the fossil record is turning ...

A recent article published and widely read in Science revealed that Neanderthal men preferred “Sapiens” women, but it fails ...