Can Scientists Bring the Northern White Rhino Back from Functional Extinction?

Scientists are debating the morality of de-extinction as a fascinating initiative to preserve the northern white rhino raises complex considerations.

In other places, controversial efforts to bring back a kind of woolly mammoth that hasn't been seen in 4,000 years are still taking form. De-extinction initiatives center on whether fossils and other genetic material may be used to resurrect the enormous beast. That is, raising from the dead entirely extinct creatures (whose sperm has not been stocked). Although many experts think it is impossible, a biotech business called Colossal, created last year, managed to raise $15 million in private finance for the amazing project to make a woolly mammoth and elephant hybrid.