Biophysical Economics

This one is apparently different from the neo-classical economics:

When one spends a dollar, we do not think just about the dollar bill leaving our wallet and passing to some one else’s. Rather, we think that to enable that transaction, that is to generate the good or service being purchased, an average of about 8,000 kilojoules of energy (equal to roughly the amount of oil that would fill a coffee cup) must be extracted from the Earth and turned into roughly a half kilogram of carbon dioxide. Take the money out of the economy and it could continue to function through barter, albeit in an extremely awkward, limited and inefficient way. Take the energy out and the economy would immediately contract immensely or stop.

An interesting read from OilDrum.

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