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{Nature_and_Environment.96.7}: ... {wren1111} Sun, 09 Mar 2008 17:06:38 CDT (10 lines)
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This a tangent, but on another website I read a comment which made
me wonder about the efficiency of car fuel vs human fuel. I wouldn't
know how to begin to figure this out, but it's worth thinking about.

<i>Does also the production, distribution and preparation of x human
energy food calories burn less than x gallons of gas?”

There is so much oil embodied in food production and distribution,
that on certain assumptions bicycles have a mpg consumption which is
no better than a car.

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