Prairie dogs are a keystone species - as a source of denning and nesting sites, regenerating soil, and as food. And when plague comes to town, it can wipe out 98% of a colony in a matter of weeks. And there's no species more dependent on Prairie dogs than the critically endangered Black-footed ferret. Tune in to learn how scientists are using drone technology to combat plague in Prairie dogs in order to save Black-footed ferrets.