[The Random Factor #6] How much coal to power a lightbulb

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Riddles & Facts & Quotes, Oh My!
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49.8% of electricity in the US is generated by burning coal.
- Energy Information Administration

It takes 714 pounds (325 kg) of coal to run a 100-watt light
bulb 24 hours a day for a year.
http://science.howstuffworks.com/question481.htm


www.zerocarbonhouse.com  A zero carbon house. Brilliant
engineering or critical to life on earth?


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