I'll try and find the article I read where they did some calculations on this, it worked out as being "greener" to drive to the shops than walk, as the petrol used had less carbon debt than the food required to power the walking.
@Dammit started
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I'll try and find the article I read where they did some calculations on this, it worked out as being "greener" to drive to the shops than walk, as the petrol used had less carbon debt than the food required to power the walking.