When an animal moves from the endangered species list to being officially extinct, it's undeniably a sad day. The creature has gone the way of the dinosaur and the dodo, but on occasion, scientists ...

Sounds impossible, but it happened. For a moment, the news had the same jolt as discovering Santa Claus is real, but the reality became far more serious. In 2003, scientists briefly brought the ...

Add Yahoo as a preferred source to see more of our stories on Google. Colossal Biosciences, the company that produced a trio of modern-day dire wolves, is expanding to a half-dozen species that it ...