Ambitious projects aim to put dire wolves, woolly mammoths and passenger pigeons back into our ecosystems. But with so many ...

Now on the seventh generation, the tauros cattle, as they have been named, are more than 99% genetically similar to the extinct aurochs, said Ronald Goderie, the project’s managing director.

Is bringing a species back from extinction truly possible, or are we simply creating something new in its image? As headlines ...

Woolly mammoths have become the poster child for de-extinction. The giant land mammals have long held our intrigue and fascination.

I was crouched on the ground, 15 meters (50 feet) from an aurochs. At least it looked like one. Eight generations of back-breeding had resurrected an animal reminiscent of the giant bovine that ...