How to save the planet

"In 2001, lighting accounted for 101 billion kWh (8.8%) of U.S. household electricity use. Incandescent lamps, which are commonly found in households, are highly inefficient sources of light because about 90% of the energy used is lost as heat. For that reason, lighting has been one focus of efforts to increase the efficiency of household electricity consumption."

BBC report on BanTheBulb.org