Have fun at Smithsonian Environmental Research Center’s free Open House on May 19 10am-4pm in Edgewater. Meet SERC scientists and participate in activities related to their projects. Learn about birds of prey, enjoy live bands, join a selfie drone photo, or jump on the wagon for a hay ride through the forest. Boat rides must be reserved and paid for in advance. Free parking at South River High School with free shuttles to SERC campus. www.serc.si.edu