Scientists Might Bring Back These Extinct Animals

This article was originally published on Sept. 9, 2022.Extinction has a pretty clear definition: gone forever. Or does it? New advances using gene-editing tools like CRISPR or targeted breeding are rapidly leading researchers to think about bringing back certain species — the passenger pigeon, Tasmanian tiger and woolly mammoth, for example — from extinction. But these projects are controversial for a number of reasons. On the extreme end is the "Jurassic Park” argument; should