I re-use plastic bags, aluminum foil, don't buy paper towels, turn in my used motor oil a place that adds it to coal to boost BTUs, don't buy overly packaged and processed food, blah, blah, blah. I believe in not wasting what you have and am also cheap.
I suspect, from reading the DUmp's bragging, that my own carbon footprint is a size 6 to their 12.