April 4 Howard County Green Fest (Howard Community College)
April 9 JHU School of Medicine’s Earth Day Expo
April 18 Baltimore City Eco Fest (Druid Hill Park)
April 19 Clean Cars Kick-off (Loyola College)
April 22 MTA Earth Day Celebration (Shot Tower Metro Station)
April 25 Baltimore County Polar Fair (North Point State Park)
April 25 Bike Blast (Druid Hill Park)
May 1 Baltimore Flower Mart
May 2 & 3 Towsontown Festival
May 9 Carroll County Herb Festival (Piney Run Park)
May 12 Clean Air Partners 2009 Annual Membership meeting (4:00-7:00 pm at Marian Koshland Science Museum, corner of 6th & E Streets, NW, Washington DC)