(CNN) — No species lasts forever — extinction is part of the evolution of life. But at least five times, a biological catastrophe has engulfed the planet, killing off the vast majority of species from ...

Humans have long tinkered with the evolutionary trajectories of other species. Thousands of years ago we tamed wolves into dogs and transformed a wild grass into the agricultural wonder wheat. Within ...

(CNN) — No species lasts forever — extinction is part of the evolution of life. But at least five times, a biological catastrophe has engulfed the planet, killing off the vast majority of species from ...

The millions of species humans share the world with are valuable in their own right. When one species is lost, it has a ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. No species lasts ...

Dire wolves were massive and highly intelligent animals nearly the size of a small horse, capable of ripping a man’s arm off as easily as a dog kills a rat. They lived in cold regions in a place ...

The tragic news of the loss of the world's last remaining northern white rhino begs the question: Can it be brought back?