Oxygen has been the most important gas in our search for life among the cosmos thus far. On Earth, we have it in abundance ...

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

A sample collected by the Hayabusa 2 spacecraft from the spinning top-like asteroid contained the nucleobases adenine, ...

Ancient DNA shows forests grew on the lost land of Doggerland 16,000 years ago, suggesting it supported wildlife.

A landmass that once connected Britain to mainland Europe had temperate forests that could have sustained Stone Age people ...

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

Maj. Gen. William "Neil" McCasland, 68, was last seen on the morning of Feb. 27 at his residence in Albuquerque, New Mexico, authorities said.