Noon–4pm Arbor Day at the Audubon Center Ages: AllEnvironment Free Prospect Park Audubon CenterBrooklyn
3–5pm Open Hours at the Environmental Education Center Ages: AllFree Brooklyn Bridge Park Conservancy Environmental Education CenterBrooklyn
4–6:30pm City Nature Challenge: Teen Bioblitz! at Brooklyn Bridge Park Ages: 9 and upEnvironment Free Visitor Center at the Boathouse, Pier 5 UplandsBrooklyn
Brooklyn Paper Section of Brooklyn-Queens Expressway to close for third and final round of repairs June 1-3