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Sustainable Energy - Without the Hot Air
Author: David JC MacKay
Hacker News 1
Avaliable on Amazon
To get a better sense what you can do to actually make a difference, I highly recommend https://www.amazon.com/dp/0954452933/tag=davidmackayca-20 (also available online for free).
If you take one transatlantic flight, you'd produce more CO2 than by driving for a year.
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