Andrea Wulf, the New York Times bestselling author, discusses her new illustrated book "The Adventures of Alexander von Humboldt"—her second work about the intrepid explorer and naturalist.
Damian Duffy and John Jennings, the award-winning team behind the #1 bestseller Kindred: A Graphic Novel Adaptation, discuss their new graphic novel adaptation of Octavia E. Butler's Parable of the Sower.