A Long Term Perspective on Climate Change - When Earth Was 20 Degrees Warmer and Crocodiles Roamed Antarctica with Princeton’s Danny Sigman (#30)

Did you know that Antarctica used to be ice-free and earth used to be 20 degrees warmer than it is now? Find out why climate change then wasn’t a problem, and why it is now with Princeton University’s Daniel Sigman.  Also find out how climate change caused horses to grow from the size of large house cats to their size today.