This video features Paleontologist Kay Behrensmeyer, who specializes in the study of how things fossilize or don’t. Explore different specimens from the Smithsonian’s National Museum of Natural History, one of the world’s largest fossil collections, and discover the special set of conditions that shape how and when bones fossilize. Explore how studying modern bones, like those Kay studies in Kenya, can help scientists better understand ecosystems of the past, present, and future.