Lights Out San Francisco

"Lights Out San Francisco is a citywide energy conservation event on October 20, 2007. On this night, we invite the entire city of San Francisco to install one compact fluorescent light bulb (CFL) and turn off all non-essential lighting for one hour."

lightsoutsf.org
lightsoutsf.blogspot.com

2 photos | 75 views

items are from 20 Oct 2007.