That sharp, briny smell is not the salt, it is a gas made by life, breathed out by tiny ocean creatures too small to see. For ...

Immigration experts say the Trump administration has increased scrutiny of spouses seeking green cards.

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

Stacker compiled a ranking of cities with the most UFO sightings in Texas using data from the National UFO Reporting Center.

The exoplanet telescope TESS revealed a distant world using an entirely different detection method than the one it was built ...