If ya think man contributes entirely to global warming, then why not try this.
Turn off your computers, hell, everything in your house, throw it all out, get rid of the house, even, live in a cave or something, but don't start a fire to keep warm, oh no, it's too warm for the enviroment to handle. OK. Time to go to work...meh, why comute there? just walk 20 miles avoiding traffic, ok? And don't smoke ciggarettes, or pot, don't drink alcohol, because it takes heat to make, don't buy anything, don't hunt cause it hurts mother nature, can't eat the leaves, mother nature will be offended. Nope, just live like this a few days til you die, then mother nature can take in your carcas for nutrients. Happy yet?