This week we interview award winning writer Mark Lee Gardner. His latest biography, The Earth is All That Lasts: Crazy Horse, Sitting Bull, and the Last Stand of the Great Sioux Nation, was published by Mariner Books in June 2022.Gardner’s previous books, Rough Riders, To Hell on a Fast Horse and Shot All to Hell, received multiple honors, including a Spur Award from Western Writers of America. An authority on the American West, Gardner has appeared on PBS’s American Experience, the History and the Travel Channels, AMC and NPR. He has written for National Geographic History, American Heritage, the Los Angeles Times, True West, and American Cowboy. Mark Gardner was interviewed by fellow biographer and BIO member Sonja Williams.