Some question whether the pups are really dire wolves, or just genetically tweaked gray wolves. But the technology could be used to help at-risk animals.

Thousands of years before we had the slightest idea of how genetics worked, humans were altering the genes of wolves and their dog descendants through breeding and domestication, ...

We shouldn’t be celebrating “de-extinction.” We should be focused on the species that are currently in danger.

The company now says that three genetically modified gray wolf pups are dire wolves. But the two males (called Remus and ...