The Extraordinary Lives Of Migratory Birds

Author Scott Weidensaul talks about the millions of birds flying unseen over our heads in the night sky, how the bar-tailed godwit can fly more than a week over water without stopping, and how new tracking technology may help with strategies to keep them alive. His book is A World on the Wing.Also, Justin Chang reviews Nitram, the new film about events leading up to a mass shooting in Australia.