With deforestation, pollution and climate change, humans have profoundly changed the natural world. And while many plants and animals have been harmed, some have actually been helped by our presence. That’s according to Chris Thomas, a professor of conservation biology at the University of York, who joins us to explain why humans aren’t all bad. His new book is called “Inheritors of the Earth: How Nature is Thriving in an Age of Extinction” (PublicAffairs).