Caves

Glowworms create dazzling threads to trap unsuspecting insects. And now, researchers think they may have found the secret ingredient in the worms' traps: urea from their guts.

Two new species of spidery cave beetle have been discovered.

Stone tools dating back 14,550 years provide rare physical evidence that places humans in the Americas earlier than previously suspected — by more than 1,000 years.

Tooth marks on the leg bone of a hominin, an ancient human relative, suggest that the poor soul had a gristly end, a new study finds.

Hawaii just doubled the number of known land mammal species that are native to the islands, thanks to the discovery of a number of fossils representing a tiny bat.

Some undiscovered ones may extend far deeper into the Earth than the record of 1.36 miles.

Deep beneath the surface of the Earth, in a dank and dismal cave, lives Hades, the invertebrate king of hell.

Shattered cave formations in the central and eastern United States preserve one of the longest records of powerful earthquakes in these regions.

While spelunking in northern Israel, cavers stumbled upon a hidden stash of ancient coins and jewelry from the era of Alexander the Great, the Israel Antiquities Authority announced.