Chris Carlsson, co-director of the “history from below” project Shaping San Francisco (historical archive at foundsf.org), is a writer, publisher, editor, and frequent public speaker. He has written two books (After the Deluge, Nowtopia) edited six books, (Reclaiming San Francisco; The Political Edge; Bad Attitude; Critical Mass: Bicycling’s Defiant Celebration; Ten Years That Shook the City: San Francisco, 1968-78; and Shift Happens: Critical Mass at 20). He redesigned and co-authored an expanded Vanished Waters: A History of San Francisco’s Mission Bay. He blogs regularly at nowtopians.com. He has produced weekly public Talks since January 2006. He also conducts award-winning bicycle history tours and recently has added a dozen walking tours to his repertoire. He has given hundreds of public presentations based on Shaping San Francisco, Critical Mass, Nowtopia, Vanished Waters, and his “Reclaiming San Francisco” history anthologies since the late 1990s, and has appeared dozens of times in radio, television and on the internet. He was one of the founders, editors and frequent contributors to the ground-breaking San Francisco magazine Processed World (1981-1994, 2001, 2005). He also helped launch the monthly bike-ins known as Critical Mass that have spread to five continents and over 400 cities.