“We All Fall Down: Artists Respond to the Emerald Ash Borer” opens at the Schuylkill Center for Environmental Education, 8480 Hagy’s Mill Road, Philadelphia, with a free reception at 7 p.m. on Thursday, Sept. 19. The exhibit showcases artists’ responses to the highly invasive emerald ash borer beetle and its impact on our forests. The opening reception includes artist talks, refreshments, and a short, guided walk to the site-specific works on the Center’s trails. “We All Fall Down” runs through Nov. 30. For more info, visit www.schuylkillcenter.org.