FUNDRAISER: SF Camerawork presents Looking Forward, Giving Back, a festive evening of music, photography, and a silent auction benefiting SF Camerawork's First Exposures, which provides free weekly photography classes to underserved youth.

6 to 9 p.m. // SF Camerawork (657 Mission St) // $10-50

SALON: The Green Zebra Action Center kicks off Earth Day with Creative Entity Opening with Amy Seidman. Artist/Musician Amy Seidman will discuss the intersection of music, digital media and technology, followed by a reception for In Response to That, Seidman's photography exhibit featuring a time capsule of The Great LA Clean Up, a grass roots response to the 1993 LA Riots. Seidman's musical group AmesEla will then perform.

5 to 8 p.m. // The Green Zebra Action Center - Crocker Galleria (50 Post St) // free

HISTORY: Chris Carlsson will discuss his forthcoming book Ten Years That Shook the City: 1968-78, which covers everything from Los Siete de la Raza to the housing and redevelopment politics of the era, the San Francisco State Strike to the lesser known strikes.

7:30 p.m. // CounterPULSE (1310 Mission St) // free