Great Smoky Mountains National Park is the most heavily visited park in the country. The sheer volume of people generates a lot of trash and food waste that tempt the park's mascot, the black bear. Unfortunately, this can mean dangerous encounters for visitors and trauma or death to the bears. Park biologists show us how they manage bears and humans to keep both safe, including the latest in bear DNA research. Then we learn about the wily ways of coyotes in the suburbs, using hidden cameras from the Atlanta Coyote Project.