A tiny, lizardlike carnivore that skittered across swampy ground roughly 300 million years ago helped set the stage for some of the largest plant eaters the planet has ever seen. Its story is a ...

Extinction troubled us long before we had a name for it. The original mascot for the loss of species, even before the concept was understood, was the dodo. The bird — fat and flightless, found by 17th ...