Scientists recently uncovered the ancient dens of 2-meter-long worms.
Charles Q. Choi, Contributor
New findings suggest fingerprints and sweat work together in "fight or flight" survival responses.
Charles Q. Choi, Contributor
The armor might help leafcutter ants defend the valuable fungus they grow for food.
Charles Q. Choi, Contributor
Scientists can identify plants by the light they reflect.
Tess Joosse, Contributor
For Asiatic lionesses, sex may be a way of protecting their cubs from murderous males.
Nala Rogers, Staff Writer
Fossils dating more than about 540 million years old are extremely rare. That's why a newly discovered ancient deposit is so valuable.
Christian Fogerty, Contributor
Study suggests parts of the animals' backs and legs fused together to form wings.
Charles Q. Choi, Contributor
Wormlike amphibians called caecilians may have evolved venomous teeth long before the first snakes crawled the Earth.
Charles Q. Choi, Contributor
Some evidence suggests that foxes may be trying to domesticate themselves.
Joel Shurkin, Contributor
New discovery could help scientists unearth more ancient microbial fossils and shed light on some big questions about early life on Earth.
Meredith Fore, Contributor
Hummingbirds can distinguish blends of color that we see as ordinary hues.
Charles Q. Choi, Contributor
Prehistoric remains also reveal signs of a particularly large predator.
Joshua Learn, Contributor