Jennifer Ackerman, author of "What an Owl Knows"

Michael Bogard discusses his book "End of Night"

Ross MacPhee discusses his book "End of the Megafauna: The Fate of the World’s Hugest, Fiercest, and Strangest Animals"

Scott Weidensaul author of "A World on the Wing: The global Odyssey of Migratory Birds"

Doug Tallamy author of "The Nature of Oaks: the Rich Ecology of Our Most Essential Native Trees"