"We're working to find out what this obstacle is in living frogs before we can go back to the extinct animal's DNA," says Archer. Fine Art/Getty Images The auroch was a form of prehistoric cow ...

But the exact periods in history when it happened are less well known. Was it a single extinction event or a series of ...

The tough decision of which species to save from extinction Roughly 1 million species of wildlife face extinction worldwide, according to a recent United Nations report. Ecologist and author ...

Scientists say the Trump administration’s embrace of de-extinction won’t help endangered species like the Great Lakes gray ...

The dire wolf — a species that disappeared 13,000 years ago and was made famous by the beloved HBO series Game of Thrones — ...