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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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