In this podcast, the stories of two naturalists — Nick Carter, who lives at the headwaters of the Choptank River, the longest river on the Eastern Shore of Maryland; and Theodore Roosevelt, the nation's 26th president and a lifelong naturalist.2:38: Tom Horton, long-time environmental writer and author, tells the story of the Choptank River on the Delmarva Peninsula and Nick Carter, the naturalist who lives on an old farm at its headwaters. Carter does a wonderful thing for the river – he does nothing. Horton explains in his new book, "Choptank Odyssey: Celebrating a Great Chesapeake River," with photos by Dave Harp.20:56: One of the nation’s great naturalists was also its 26th president, Teddy Roosevelt. He developed an interest in nature when he was a boy and maintained the fascination through his life. Our guest is Darrin Lunde, a museum naturalist who works at the Smithsonian’s National Museum of Natural History in Washington. He is the author of "The Naturalist: Theodore Roosevelt, A Lifetime of Exploration and the Triumph of American Natural History."Links:http://www.schifferbooks.com/choptank-odyssey-celebrating-a-great-chesapeake-river-5867.htmlhttp://crownpublishing.com/news/naturalist-darrin-lunde/#.V5o0GdIrK70