One of the most photographed features in Mystery Cave is the Turquoise Pool, a body of water so clear and so perfectly ...

Crystal Grottoes Caverns is Maryland’s only show cave, which means it’s the only cavern in the state that’s been developed ...

The idea that humans may have company in the universe was given a boost this week after two U.S. presidents commented on the possibility of extraterrestrial life. “Are aliens real?” a podcaster asked ...

How big would a telescope need to be to see Earth’s dinosaurs from 66 million light-years away? Think big—and then think ...

Hours after saying that Barack Obama acted improperly by allegedly sharing classified information with Americans when he said ...

I could be the best pathologist on planet earth—the undisputed Sherlock Holmes of medical science, even—and I still wouldn’t have the slightest clue what the cause of death is for this particular ...

If life exists elsewhere in the universe, researchers at the University of Washington are finding the clues on Earth to help ...

Life on Earth may not have started here at all. A scientist says alien intervention is unlikely but still possible, reshaping the debate on our true origins.

From steaming volcanic vents to glowing salt flats, these surreal California landscapes look so otherworldly they feel pulled straight from another planet.

Former president Obama clarified comments about extraterrestrial life after an interview with Brian Tyler Cohen.

Some underrated sci-fi shows are better than they appear and may impress fans of the genre, including forgotten series like ...

The Science: Europa has been considered as a top contender for alien life for even longer than Enceladus, thanks to its massive under-ice liquid water oceans. It also displays water vapor plumes ...