The world is currently experiencing its sixth mass extinction, with potentially thousands of species lost every year. Bringing back woolly mammoths, dire wolves, and giant moa (or close approximations of those ancient creatures) is undeniably enticing, but it doesn’t do much for the animals and ecosystems that need our help today.

After a controversial project claiming to have resurrected the dire wolf, Colossal Biosciences has now announced plans to bring back nine species of the extinct moa bird

A species of huge, flightless bird that once inhabited New Zealand disappeared around 600 years ago, shortly after human settlers first arrived on the country’s two main islands. Now, a Texas-based biotech company says it has a plan to bring it back.