‘The Beasts of the East’ follows the unusual story of North Carolina’s red wolves

Millions of bison once roamed North America, from Alaska to North Carolina. After being hunted to near extinction, fewer than 1,000 were left by the late 1800s. Today, bison and a handful of other large animals are having a surprising renaissance. We speak with the author of a new book about why many animal populations have plummeted and why some are making an unexpected comeback.