Could ancient humans really have built the pyramids without extraterrestrial help? Or do such questions reveal more about modern anxieties than the past itself?

Could ancient humans really have built the pyramids without extraterrestrial help? Or do such questions reveal more about ...

From phone boxes and flux capacitors to black holes and hot tubs, sci-fi has created plenty of ways to explore the fourth ...

A civilization capable of interstellar travel may also be one that has moved beyond conquest, excess and ecological ...

Humans really do rule the world. We took over fast and far, more than any other wild vertebrates. We inhabit nearly every ...

A new study shows cultural evolution helped humans expand across Earth far faster than genetic change alone could achieve.

Researchers have identified the long-mysterious Toronto “subway deer” as a previously unknown extinct deer related to the ...