Spying on Whales

How did a whale graveyard end up in a Chilean desert? Follow a paleontologist's detective work, which helped him make predictions about the future of whales. Also, meet whales with legs. Guest: Nick Pyenson, Curator of Fossil Marine Mammals at the Smithsonian Institution’s National Museum of Natural History and author of "Spying on Whales: The Past, Present, and Future of the Earth’s Most Awesome Creatures" (Image courtesy of Google Maps and Claudio Moreno, Feb. 2012)