Shift Happens!: Critical Mass at 20 - Softcover

Chris Carlsson (co-editor) is a writer, San Francisco historian, professor, bicyclist, tour guide, blogger, photographer, book and magazine designer. He's lived in San Francisco since 1978. He has written two books, edited five, including Critical Mass: Bicycling s Defiant Celebration (AK Press: 1992), and co-authored another. He helped co-found Critical Mass in September 1992, and has ridden with Critical Mass rides in a dozen cities on three continents since then. He has been propelled into extended world travels since 2002. He has directed Shaping San Francisco since its inception in the mid-1990s, and continues to be co-director of the archive of San Francisco history at FoundSF.org. He also conducts award-winning bicycle history tours a dozen times a year, and hosts an ongoing Public Talks series in San Francisco.

LisaRuth Elliott (co-editor) is an activist, everyday bicyclist, bread baker, urban farmer, international disaster relief volunteer, historian, writer, dancer, weaver, and artist. She co-directs Shaping San Francisco, a community history project, co-edited Ten Years That Shook the City: San Francisco 1968-1978 (City Lights: 2011) and is currently illustrating a book of haiku by her father. She loved everything about helping create and edit this book and is excited for the Critical Mass world to converge in San Francisco in September 2012!!

Adriana Camarena (co-editor and contributor) is a writer from Mexico City, Mexico. She currently lives in San Francisco, California, where she writes about life in her immigrant working class neighborhood.