This is a complicated and informative graph of energy usage in the U.S. for 2011. What's most notable is how much energy is "wasted"--around 58%. I'm disturbed by this, but I want to emphasize that you can never have zero wasted energy.
Also, houses in the U.S. appear to be cheap, but industrial processes are geared towards things that end up in houses. Transportation will always be the big one. I'm not ready to trade in my car for a horse, though. Very odd creatures, horses are.
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