Gene resurrection

It’s not a dire wolf—yeah, we know. In early 2025, Colossal Biosciences made headlines with a snow-white wolf said to revive a species extinct for 10,000 years. Scientists pushed back: it’s still a gray wolf, just one engineered with about 20 DNA traits taken from ancient dire wolf bones.

But the science behind it is real. Thanks to gene editing, cloning, and ancient DNA research, scientists can study genetic material from extinct species and reintroduce parts of it into living ones. That could help protect endangered animals, create climate-resilient plants, and even lead to new medicines.

This kind of genetic “time travel” relies on growing DNA libraries—from dodos and woolly mammoths to ancient humans. It’s already being used, including efforts to restore lost genes linked to disease and to revive genetic diversity in endangered species like the black-footed ferret.

Extinction may be permanent. DNA doesn’t have to be.

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