Once, magnificent creatures like the Dodo and Passenger Pigeon roamed Earth. Their trusting nature and sheer numbers, however ...

For nearly 20 million years, megalodons prowled the world’s oceans. The massive creatures, which could grow up to 80 feet ...

Curitiba, Brazil used to be forests, wetlands, fields and streams before it was developed over the last half-century. Gilberto Jacob via Unsplash As new species are discovered around the world, others ...

An illustration of Procoptodon goliah, a giant kangaroo that weighed up to about 550 pounds and went extinct around 40,000 years ago Nobu Tamura via Wikimedia Commons under CC-BY-3.0 For many people, ...

Around 250 million years ago, one of Earth's largest known volcanic events set off The Great Dying: the planet's worst mass extinction event. The eruptions spewed large amounts of greenhouse gases ...

Less than a year ago, United States company Colossal Biosciences announced it had “resurrected” the dire wolf, a ...

Scientists have successfully sequenced the genome of the long-extinct woolly rhinoceros from an unusual place: the stomach contents of a naturally mummified Pleistocene wolf pup from Siberia. As its ...