To understand the fossil record and the diversity at any given time, scientists need to gain insight into conditions and match them up with the...

Comets terrified Henry V111 and the Elizabethans. But we think they’re cool (as long as they miss the Pale Blue Dot). Some...

The shrinking of the Earth’s high outer atmospheric layer has been linked to a sharp drop in the sun’s ultraviolet radiation levels. The research, led by scientists...

Two and a half billion years ago the atmosphere contained almost no oxygen, Arizona State University scientists say, and life as we know it was not...

The apparent development of a large void of some billion light-years in diameter in the Constellation Eridanus appears to be improbable given current cosmological models. A radical and...