Many species of fungus across the world produce psilocybin, a chemical with psychedelic effects in humans, but its evolutionary purpose may be to deter mushroom-munching insects ...

Beneath Antarctica's Ross Ice Shelf lies one of the least measured oceans on Earth—a vast, dark cavity roughly twice the volume of the North Sea.

In October 1961, the Soviet Union detonated the Tsar Bomba, a nuclear weapon with a yield of 50 megatons. The explosion was ...