Peter Brannen is a contributing writer at The Atlantic. He is the author of The Ends of the World, about the biggest mass extinctions in Earth’s history. His work has also appeared...view morePeter Brannen is a contributing writer at The Atlantic. He is the author of The Ends of the World, about the biggest mass extinctions in Earth’s history. His work has also appeared in the New York Times, the Washington Post, and other publications.view less