The weekend features spirited conversations and presentations by prominent authors, naturalists, and conservation leaders, including: Aldo Leopold biographer Curt Meine; Aldo Leopold Foundation director Buddy Huffaker; former Natural Resources Conservation Service chief Paul Johnson; Center for Humans and Nature president Brooke Hecht; Quivira Coalition executive director Courtney White; Leopold scholars Susan Flader and J. Baird Callicott; geologist and author Lauret Savoy; U.S. Forest Service Deputy Chief Leslie Weldon; poet Robert Hass; author Gary Nabhan and “Planet Walker” John Francis; and Center for Whole Communities founder Peter Forbes (partial list).