Dallas-based startup Colossal Biosciences scores $200 million investment for its efforts to bring back extinct species.

In a mass extinction event some 40,000 years ago, Australia lost 90% of its large species, including nearly two dozen kinds ...

"We had a marsupial lion. We had all sorts of crazy things." Then, about 40,000 to 65,000 years ago, most of these large animal species went extinct, including all of the short-faced kangaroos and ...