Tree Migration w/ Zach St. George

In this episode of Talk Nerdy, Cara is joined by science reporter Zach St. George to talk about his book "The Journeys of Trees: A Story About Forests, People, and the Future." They discuss the phenomenon of forest migration as well as the sometimes misguided yet passionate and heartfelt efforts of environmental activists to secure a lusher, greener future for us all. Follow Zach: @ZachStGeorge.