Ancient Greeks believed in alien life, as well as in gods, souls, and beings that inhabited the Moon, stars, and Heavens.

Stacker looks back at popular snacks that defined generations. You'll find out how the most-famous junk food on Earth was ...

Aristotle's views on the nature of the cosmos dominated the Ancient Greek world. He argued that there's only one world, at ...

Genetic testing revealed that nutria living in California since 2017 are most closely related to a population in central ...

From lava tubes on Mars to ice pockets on Europa, subterranean environments may offer the best chance of finding life—and living safely—beyond our planet. “I was like, ‘OK, I'm pretty sure that ...

Far below the ocean’s surface, where sunlight can’t reach, some of the most unusual creatures on Earth thrive in complete ...

Searching for alien languages sheds light on how much human languages have in common—with each other and even with animal ...

For generations, human beings have wondered: What would alien life from another planet be like? But we rarely ask the opposite: What would they think of us? It’s a question that can produce some, well ...

Local families took advantage of summer-like conditions to come out April 3 to Lake Metroparks’ Penitentiary Glen Reservation, where they learned how animals parent their young, practiced using their ...

A Space Odyssey hit screens. Read SFX legend Douglas Trumbull on the movie's original "crap script" and 20-foot-tall green ...

Corrections & clarifications: A previous version of this story incorrectly reported that Jonathan the tortoise had died. Despite claims of his death spreading on social media, the world's oldest known ...