Scientists have discovered “alien-like” water inside a 400-million-year-old plant, revealing unusual chemistry that could ...

The US government's registration of the domain aliens.gov has prompted online speculation about its purpose, with some netizens saying it's more likely tied to immigration than extraterrestrials.

Debunking alien claims matters, but so does telling richer, more compelling stories about how humans shaped their own past.

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

IMAGES of an unusual pyramid-shaped structure on Mars that look like those in Egypt have reignited wild theories about aliens ...

State and local offices across Washington are being directed to remove the word 'alien' from state statutes and replace it with 'noncitizen.' ...

Washington lawmakers say the change aligns the state with similar efforts on the West Coast. California and Oregon are the only other states with laws making the same change across all statutes ...

By Will Dunham WASHINGTON, March 16 (Reuters) - Astronomers have spotted a planet orbiting a star in our neighborhood of the ...

Xiao Hua Yang paints in unfamiliar purples, greens and yellows, rendering the natural world as something alien but always exciting.

The Supreme Court will hear oral arguments next week in a challenge to the government’s policy of systematically turning back ...

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