Join the team to help restore the American Chestnut tree, learn about critters found in Maryland’s forests, and talk to experts about brook trout and fracking at a free Open House at the University of Maryland Center for Environmental Science's Appalachian Laboratory. On Saturday, May 3 from 10 a.m.-2 p.m., learn about science with hands-on experiments for the whole family, meet the scientists working in your community, and enjoy a GPS cache hunt outside.