Here is a list of events in conjunction with Earth Day, Thursday.
March for Parks, a walk to raise money for projects to improve Fort McHenry National Monument and Historic Shrine. Register at 9 a.m.; walk begins at 10 a.m. Walkers will circle the fort twice and have a picnic lunch at noon. Call: (410) 625-3099.
Earth Day Fun Fair and flea market, 9 a.m. to 5 p.m. at the Owings Mills Volunteer Fire Hall, 10410 Reisterstown Road, will have a consumer trade show of local businesses, children's craft corner using household recyclables, information from area environmental groups, bake sale, refreshments and raffle. Call: (410) 356-3641, (410) 356-6026, (410) 526-7139.
Marsh cleanup. Anacostia Watershed Society-sponsored cleanup of marsh along Kenilworth Drive, Prince George's County, 9 a.m. to noon. Call Robert Boone, (301) 513-0316.
Gunpowder Falls State Park Cleanup and Tree Planting. Join the Gunpowder Valley Conservancy, park officials and Save Our Streams at four locations from 10 a.m. to 3 p.m. Call: (410) 592-2897 or (410) 661-1233 to register.
Four-Community Cleanup Rally in Calvert County. Communities of Western Shores, Governor's Run, Kenwood Beach and Scientists Cliffs will sponsor an all-day cleanup to beautify their neighborhoods. Call: Aileen Hughes, (410) 586-1570.
Calvert Marine Museum. Join the annual spring cleanup of the historic lighthouse and nearby oyster beds, 9 a.m. to noon. Call: Layne Bergin, (410) 326-2042. Also, learn about "Sharks -- The Fossil Record" from John Maisey of the American Museum of Natural History in New York, 7:30 p.m. in the auditorium. Call: Anne Larsen, (410) 326-2042.
Stream cleanup. Join a stream cleanup and Earth Day festival celebrating Maryland's waterways at Catonsville Community College, 10 a.m. to 2 p.m. Call: Vernon Alt, (410) 455-6927.
Tree-mendous Maryland: Spring planting, "Rites of Spring," Patapsco Valley State Park, Howard/Carroll counties. Call: Terry Galloway for time and details, (410) 974-3776.
* Spring planting: West Anne Arundel County Chamber of Commerce, Route 32 west of Route 175. About 175 to 200 people will be planting seedlings. (410) 974-3776.
* Spring planting: Eastport Elementary School, Anne Arundel County. Plant 17 trees. (410) 974-3776.
* Spring planting: Dogwood Park, Rockville, Montgomery County. Plant 150 trees. (410) 974-3776.
* Spring planting: Gunpowder Valley Conservancy, Gunpowder Falls State Park, Baltimore County. Plant 100 trees, 200 seedlings. (410) 974-3776.
Tree-Mendous Maryland. Izaak Walton League to plant 1,700 tree seedlings at I-270 and Route 118, Montgomery County. Call: Terry Galloway, (410) 974-3776.
Environmental fair. Dundalk Community College sponsors environmental activities and exhibits for students, teachers and community. Main lobby, 11:30 a.m. to 1:30 p.m. Call: Marlene Rydezewski, (410) 285-9927.
UMBC will have a free lecture by Tom Horton on "Environmental Issues in Maryland 1993," 7:30 p.m. in the University Center Ballroom.
& Tree-Mendous Maryland:
* Spring planting, Hannah More Center School, Baltimore County. Plant 50 seedlings at I-795. (410) 974-3776.
Spring planting: Youth Serve Day. Maryland Conservation Corps. Statewide planting of 1,000 seedlings. (410) 974-3776.
Celebration of Trees and People. Tree-Mendous Maryland honors Marylanders who have helped reach goal of planting 1 million trees and seedlings annually. 9:30 a.m., Fort McHenry. Call: (410) 974-3776.
Cleanup of Colgate Creek. Representatives of firms and organizations around the southeast Baltimore community of St. Helena and local residents will clean up a portion of the Patapsco River tributary above the Seagirt Bridge, 11 a.m. to 3 p.m. (410) 631-3386.
Tawes Awards Ceremony. Maryland Department of the Environment and the Maryland Petroleum Council honor businesses that make environmentally friendly petroleum products and gives the Youth Tawes Award, which recognizes outstanding young people for their contributions. Ceremony at 1 p.m. at Quiet Waters Park in Annapolis. Call: Betty Meyers,(410) 631-3001.
Cleanup Project. More than 250 girls from Bryn Mawr, Western High, Garrison Forest, St. Timothy's and Oldfields schools will clean up a 6-mile stretch of stream in Gwynns Falls Park. Kick-off ceremony begins at 9 a.m.
Aberdeen Proving Ground Earth Day Festival. Full day of festivities. Call: Jim Bailey, (410) 671-4429.
Earth Day Celebration. Catonsville Community College holds an Earth Day festival with live entertainment, environmental speakers, exhibits, games, prizes and free seedlings. 10 a.m. to 4 p.m. Call: Vernon Alt, (410) 455-6927.
Stream Cleanup. GUTSE (Girls United to Save the Environment) is looking for volunteers to help with a cleanup in Gwynns Falls Park, 9 a.m. to 1 p.m. Call: (410) 969-0138.
& Tree-mendous Maryland:
* Spring planting. Earth Day, Seton Keough High School, Baltimore. Planting 100 trees and 100 seedlings. (410) 974-3776.
* Spring planting. Brooklyn Park Elementary, Anne Arundel County, Earth Day celebration, planting seedlings. (410) 974-3776.
"Together We Can Clean Up" Awards. Maryland Department of the Environment honors individuals and groups who have helped the agency. Ceremony at Carrie Murray Auditorium at 9:30 a.m. Call: Betty Meyers,(410) 631-3001.
Green Corps, a field school for environmental organizing, will have a cleanup of Baltimore city parks and streams, with registration at 9 a.m. at Baltimore Polytechnic Institute, Falls Road and Cold Spring Lane, and cleanup from 10 a.m. until noon. About 500 volunteers are needed. (410) 332-0025; or Save Our Streams, (410) 969-0084.
Tree planting: Anacostia Watershed Society will plant trees at Anacostia Park, 9 a.m. to 1 p.m. Call: Robert Boone, (301) 513-0316.
Stream cleanup. Owings Mills Green Action (OMeGA) will have a stream cleanup along the Upper Gwynns Falls at the Owings Mills Metro Station at 10 a.m. Call: OMeGA, (410) 526-7139.
Waterway cleanup. North Point Peninsula Restoration Committee will have a cleanup of North Point and Jones Creek, Baltimore County. Call: Save Our Streams, (410) 969-0087.
& Tree-mendous Maryland:
* Spring planting. Calvert Group/Anacostia River tree planting, Prince George's County, planting 150 trees. (410) 974-3776.
Spring planting: IBM tree planting at I-270 cloverleaf, Montgomery County. Plant 100 trees. (410) 974-3776.
* Spring planting: Calico Industries, Route 32, Anne Arundel County, planting 1,000 seedlings (410) 974-3776.
* Spring planting: "Clean and Green" tree planting, Montgomery County. (410) 974-3776.
Earth Day Celebration. Enjoy environmental exhibits, education material and more at Quiet Waters Park in Annapolis, 11 a.m. to 5 p.m. Call: Lisa Shore, (410) 222-1777.
Earth Day Celebration. Cambridge/South Dorchester High School will have children's activities, environmental exhibits and entertainment, 1 p.m. to 5 p.m. Call: Cindy Slacum, (410) 228-3773.
Earth Day at Soldiers Delight, Baltimore County. General hikes at 2 p.m. and 3 p.m., with free pine seedlings for visitors. Call: Helen Tenner, (410) 974-3771.