If you need some cheering up on this dark, dark afternoon (and who doesn't given the news spilling out of the various climate talks in Brussels and Poznan - I don't think we'll be able to update until next week, but it's not good), try this. An exuberant Hank Green from Ecogeek has done some ad-hoc light bulb testing to show how incandescents, CFLs and LEDs compare. Shame this wasn't done in time for the recent EU vote on light bulbs.
(Thanks, Treehugger)
