The Complexity and Wonders of Avian Migration.

Scott Weidensaul has spent decades studying bird migration. "There is a tremendous solace in watching these natural rhythms play out again and again," he says. Originally broadcast March 29, 2021.

Climate change has put organisms on the move. In her new book, The Next Great Migration, Science writer Sonia Shah writes about migration — and the ways in which outmoded notions of "belonging" have been used throughout history to curb what she sees as a biological imperative.

Roach researched animal misbehaviors for her book, Fuzz. She says animals tend to ignore the rules we try to impose on them — and they often have the last laugh. Originally broadcast Sept. 14, 2021.