While mirror bacteria may sound like a fun time, a group of 40 renowned scientists conclude it is probably not worth the risk.

Our planet is unique for its ability to sustain abundant life. From studies of the rock record, scientists believe life had already emerged on Earth at least 3.5 billion years ago and probably much ...

Astronomers have long searched for life within a rather narrow ring around a star, the "habitable zone," where a planet ...

In high enough doses, hydrogen cyanide can kill an adult human in minutes, but the chemical may be the reason why we’re here ...

Sexual frequency is an unspoken contract in monogamy. When desire shifts, pain grows—until couples replace silent assumptions ...