Pyenson is a paleontologist and “reading whale bones is what I do,” he says. These bones have told some amazing stories: whales outweigh dinosaurs and are the largest creatures ever to have lived on Earth, and their songs can travel some 900 miles underwater. But while we know whales descended from four-legged land-dwelling animals the size of a dog, we don’t know when and how they developed their tremendous sizes, what’s to stop them from getting still larger, or if they can adapt to climate change. The curator of fossil marine mammals at the Smithsonian’s National Museum of Natural History, Pyenson takes us through the collection—the largest in the world—with attendant lessons on whale anatomy, feeding habits, and migratory range, as well as on field trips to Panama, Alaska, and the Hvalfjörður whaling station west of Iceland.https://www.politics-prose.com/book/9780735224568Learn more about your ad choices. Visit megaphone.fm/adchoices