How much fuel does it take to power a lightbulb for a year?
Energy sources are compared in this infographic...
http://awesome.good.is/transparency/web/1012/lightbulb/flat.html
While you're at this site, have a look at some of the other infographics or go to the main page at http://www.good.is/departments/transparency/
Or go to http://www.good.is/the-energy-issue/ and contemplate what it means to turn on a light bulb!
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