How Flowers Made Our World

David is a biologist acclaimed for his lyrical explorations of the living world. His books have twice been finalists for the Pulitzer Prize in Nonfiction, in 2012 for The Forest Unseen and in 2022 for Sounds Wild and Broken. His 2017 book, The Songs of Trees, won the John Burroughs Medal. Other literary honors include a Literature Award from the American Academy of Arts and Letters, a two-time finalist for the PEN / E. O. Wilson Literary Science Writing Award, and winner of the Acoustical Society of America’s Science Communication Award, the National Academies’ Best Book Award, the Iris Book Award, the Reed Environmental Writing Award, and the National Outdoor Book Award for Natural History Literature. He is a fellow of the Linnean Society of London, a Guggenheim fellow, and adjunct professor of environmental sciences at Emory University. He was previously William R. Kenan Jr. Professor at the University of the South in Sewanee, Tennessee. Haskell lives in Atlanta, Georgia.

Susan Grelock Yusem, PhD leads strategy and innovation at Commonweal, where she’s part of the stewardship team guiding the organization and supporting the 30+ programs that call Commonweal home. A trained depth psychologist and community psychologist with a doctorate from Pacifica Graduate Institute, Susan’s career has unfolded at the forefront of the organic and regenerative food movement, including leadership roles at Patagonia’s regenerative food division and Amy’s Kitchen. She brings together strategic communication, psychological depth, and collaborative leadership, with deep interests in narrative design, radical hospitality, and bringing the sensibilities of depth psychology into everyday life and group settings. Susan lives in Point Reyes Station, California, where you’ll often find her hiking, trail running, writing, cooking, and celebrating the ways we gather and create meaning together.