From Sumner Matteson's book Afield we hear more from his interview with botanist Jim Zimmerman, about his life as a student and his teachers, among them Aldo Leopold. He discusses four teachers who had a profound influence on his life and his approach as a...

Scott Weidensaul is an eloquent writer who many birders love to read. We hear the preface to his classic book published in 1999, Living on the Wind , Across the Hemisphere with Migratory Birds, and the introduction to his new book A World on the Wing, The Global...