"He [Ben Larson at the new Clean Energy Program UCS] heard that replacing 15 incandescent (the regular kind) bulbs with fluorescents (those cool, corkscrew ones) removes as much carbon dioxide as driving a Prius instead of a regular car." (At the emission rate of 1.35 lb/kWh) "Here's where we at UCS get lucky actually having scientists and engineers in house to get some answers to separate fact from environmental urban myth. The final analysis might surprise you as much as it surprised us." http://hybridblog.typepad.com/my_weblog/20...ing_prius_.html