Hundreds of red-legged frog tadpoles, once thought locally extinct and then threatened by storms, have returned to the Santa Monica Mountains, experts reported. The Aquarium of the Pacific, working ...

Resurrecting dire wolves is pretty darn metal. Hatching new dodo birds would make the impossible seem possible. Bringing back the woolly mammoth is cool. Why it matters: Dallas-based "de-extinction" ...

Without digging or drilling, Perseverance rover turned up a rich trace of complex carbon on the bare face of a Martian rock.

A recent study in the Proceedings of the National Academy of Sciences suggests that differences in physiology, metabolism, ...