When: Sat., April 18, 11 a.m.-4 p.m. 2009
"Going green" has a lot more cachet than it did ten years ago, what with the urgency over fossil fuel reduction and the prospect of rising sea levels. This year, as always, the progressive Bay Area offers a variety of Earth Day festivities. On Saturday, Apr. 18, events include a concert and street fair at Temescal Creek Park (47th and Adeline sts., noon-4 p.m., free) with sumo wrestling, an obstacle course, clowns, balloon sculptures, a Velcro wall, and recycled art. Chabot Space & Science Center (10000 Skyline Blvd., Oakland) will host a special Earth Day exhibition with worm composting demonstrations, vacuum chambers, and a giant glitter globe (11 a.m.-4 p.m., $10.95-$14.95). Then on Sunday, Apr. 19, you have the option of a beach clean-up and found-object art contest in Albany (end of Buchanan St., 10 a.m.-1 p.m., free), or Earth Day at the Oakland Zoo (9777 Golf Links Rd., 10 a.m.-3 p.m., $5.50-$10.50), with face painting, animal presentations, and more than forty activity stations.