On April 25, 9 a.m. to noon, join the Anacostia Watershed Society to clean up the riverbanks of the Anacostia. With nearly 40 sites across the watershed, volunteers will be collecting litter while beautifying and restoring the river. Volunteer registration opens on March 2. To find out more, email the AWS Earth Day team at email@example.com. Join the Earth Day email list at anacostiaws.org.