Photographer Michael Nichols and author/editor Melissa Harris join us to discuss their book A Wild Life: A Visual Biography of Photographer Michael Nichols. Nichols has spent decades photographing iconic wildlife species including mountain gorillas, elephants and lions. The book features a catalog of his photographs, accompanied by his own life story and reflections on ethics and environmental conservation issues. Mountain gorillas, Volcanoes National Park, Rwanda, 1995; from A WildLife (Aperture, 2017) (Michael Nichols/National Geographic Society)   Baby elephant Shukuru, DSWT orphanage, Nairobi National Park, 2010;from A Wild Life (Aperture, 2017) (Michael Nichols/National Geographic Society)   The chimpanzee Whiskey, chained in a garage, Bujumbura, Burundi, 1989;from A Wild Life (Aperture, 2017) (Michael Nichols/National Geographic Society)