Clean Up the Patuxent - Saturday, April 2 - Help get trash out of the river, clear trails and straighten up the barn. Dress for outside work. Arrive promptly, leave whenever. 10am-3pm @ Jug Bay Wetlands Sanctuary, 1361 Wrighton Rd. off Rt. 258, Lothian. free: 410-741-9330; www.jugbay.org.