Add Yahoo as a preferred source to see more of our stories on Google. More than 13,000 references, including insights from Indigenous Peoples and local communities, help to form the assessment. To ...

Documents might help scientists shed light on unexplained phenomena and government secrets, experts said.

Add Yahoo as a preferred source to see more of our stories on Google. The best reason to send humans to Mars isn’t for guts or glory—or the construction of colonies to safeguard against existential ...

Trump has ordered the release of UFO files. The real question isn’t what they contain—it’s how the uncertainty could affect you.

U.S. intelligence officials found no evidence that unidentified aerial phenomena observed by Navy aviators in recent years were alien spacecraft, but the sightings remain unexplained in a highly ...

While the findings are grim, experts say prevention and control can curb the problem. Invasive alien species are spreading across the globe at an unprecedented rate and causing widespread ecological ...