Daniel Stevens

At 6.1lbs per gallon of gasoline, 80 lbs of gas represents about 13 gallons of gas per year. Since oxygen isn’t actually in the gasoline and is required for combustion, the carbon emissions PLUS the oxygen in the air used to make CO2 cause the weight to be 3 times the weight of the carbon emitted from the gasoline source. And remember that oxygen is further down the periodic table, and thus weighs more, and there are two of them per single atom of carbon.

If you only buy 2 gallons per year, you must have almost NO lawn, or simply never mow, or have some sort of futuristic lawn mower that cost you an arm and a leg and a bar of gold but only uses 2oz of gas per hour.

My experience is about 1 gallon per hour of mowing, and depending on how fast you mow, even a smallish lawn can take a while, depending on how wide your mowing deck is. At 6 months of mowing per year (at least here outside of DC), that’s 26 weeks, and assuming a gallon per week at 6.1lbs per gallon, that’s 158.6 lbs of gas, easily generating the 90lbs of CO2 emissions, especially since the combustion in a mower engine is likely much less inefficient than your car, and has no catalytic converter. Even at half that amount of gas, since only 27% of CO2 emissions by weight is actually carbon from the gas, 79.3 lbs of gas could generate 24.3 lbs of carbon emissions to make up 90 lbs of CO2.

Thanks–

Personally, to reduce global warming and CO2 emissions I hold my breath. In fact, I have not exhaled for 2 years now.

furthermore, I have given up eating ruffage as flatulence emits too much Methane gas and that is 100 times more “greenhouse potent” than CO2.