If chatting with Kermit's not your thing, some of the nation's top naturalists will be on hand to discuss polar bears, Ecuadorian birds, and other outdoorsy subjects. Tomorrow's and Sunday's hikes will take you straight to the action. Specialists will lead trekkers on a trail populated by native birds and wildflowers. Also on tap: a plant sale, a nature-themed art show, and live animals that can be touched. Says Christyson: "It's important to understand that what we do connects with everything around us."
Fri., April 28, 6:30 p.m.; April 29-30, 10 a.m.