When it comes to the search for life elsewhere in the universe, methane and other chemical compounds are seen as signs of ...

Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

If you believe the legend, Michigan is Bigfoot country. The state ranks among the top in the nation for reported Bigfoot ...

Could humans spread Earth life beyond our planet? Astrobiologists explain where extremophiles might survive and why the risks ...

An unidentified DNA sample found on one of Sophie Toscan du Plantier’s boots has returned to the heart of the case almost 30 ...

This video starts with a simple question — does life really need DNA? — and then turns it into something much bigger. From RNA worlds and TNA protocells to exotic XNAs, methane-compatible chemistries, ...

A screenshot from the White House’s Aliens.gov page shows alien-themed imagery and the phrase “They Walk Among Us.” The page launched amid renewed public attention on UFOs, UAP disclosures and viral ...

The search for alien life has mostly focused on water, oxygen, and distant Earth-like planets. Now another clue has entered the picture. Researchers say living systems may leave behind a hidden ...

Gardaí investigating the murder of French film producer Sophie Toscan du Plantier in west Cork almost 30 years ago are turning to foreign police forces to try to identify DNA found on one of her boots ...

Add Yahoo as a preferred source to see more of our stories on Google. The CIA has been accused of attempting to use DNA submitted to 23andMe and Ancestry.com to aid in their hunt for aliens on Earth.

Does the CIA have its own Men in Black? Apparently, the government isn't disclosing everything they know about UFOs. A whistleblower has accused the CIA of attempting to use people's DNA to aid them ...

We've been looking at nature the wrong way, argues Rowan Hooper. If we stop focusing on the individual, we get a whole new picture of how life on Earth – and elsewhere – may have begun ...