Do you use AC? Or any mode of transportation other than walking? Or any convenience that relies on fossil fuels or grid electricity? Do you use any manufactured products? Eat any food that has been shipped a distance farther than your garden?
I assume (perhaps I should not) that by "littering" you are referring to the production of greenhouse gases. If this is so, I'd like to point out that if you are breathing, by your definition, you are littering with every breath.
