A partial skeleton dating back more than two million years is the most complete yet of Homo habilis, one of the earliest ...

Earth's first large land organisms—tree trunk-like beings that stood up to 26 feet tall—weren't early fungi but, rather, ...

Nitrogen, upon which all life on Earth depends, may hold the key for explaining how early life on the planet evolved and how it could evolve on other planets.

Two extremely damaging crop pests have interbred to create hybrids resistant to more than one pesticide that could cause ...