This is a fantastic calculation - one I've never thought about.
The same calculation was originally applied as an argument against oil-based fuels, due to the oil being transported so far from it's point of origin.
But now the argument is being used against electric vehicles due to the transport of all the ore for the batteries.
And NOW, it looks like this is good for the food argument too.
Well done. Very well done. I bet if we factor in all the gas used for the transport of that food we could see quite a large difference in "carbon footprint" for vegetarians vs people with a normal diet. Using their language ("carbon footprint"), we might just get them to shut the fuck up.
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