As the world struggles through an ongoing mass extinction, scientists across the planet are getting closer and closer to bringing entire species back from the dead -- a process known as de-extinction. Inspired by an earlier episode on the thylacine, Ben and Matt dive into the fact, fiction, and surprising controversy surrounding the idea of bringing mammoths, Tasmanian tigers, and other extinct creatures back into the world, even as the creatures who live here now continue to die off at alarming rates.