Celebrate Earth Day Saturday, April 20, in CFAES’s Wilma H. Schiermeier Olentangy River Wetland Research Park by helping plant nearly 400 donated trees and shrubs, yanking invasive species, and cleaning up the park and the nearby banks of the Olentangy. You’ll get dirty hands, wet feet, a good feeling, and a free lunch. More. (pdf). The Wetland of International Importance is part of our School of Environment and Natural Resources.