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0diggsdigg 374Share Which do you think emits more CO2: four guys running one mile, or four guys driving one mile in a hybrid car? If you've read the headline, then you already know the answer is quite surprising.
Which do you think emits more CO2: four guys running one mile, or four guys driving one mile in a hybrid car? If you've read the headline, then you already know the answer is quite surprising.
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