How did birds evolve? The answer is wilder than anyone thought
Discoveries in Jurassic rocks reveal that birds were adept fliers earlier than scientists realized.
Discoveries in Jurassic rocks reveal that birds were adept fliers earlier than scientists realized.
Millions of people worldwide carry genetic mutations that weaken their immune system.
A debate over a potential newly discovered species, and a tip for buying good sherry in this weekâs pick from the Nature archive.