(MD) (Smithsonian Environmental Research Center) Half a century ago, scientists believed the last black-footed ferrets—the only ferrets native to North America—had gone extinct. Today, their recovery marks one of the most hopeful conservation stories of the 20th and 21st centuries. In a free Smithsonian webinar, discover how this endangered species rebounded with Paul Marinari, a retired biologist with the Smithsonian’s National Zoo who assisted in the ferret’s recovery for much of his career.