Average American: 16 tons CO₂/year. Average Amish: 1.5-2 tons. 8-10x less.
Why
No car (0 tons). No grid electricity (0 tons). No flights (0 tons). Minimal purchases (minimal production). Food — own (minimal transport). Heating — wood (carbon-neutral if forest replenished).
Irony
Amish don't know what 'carbon footprint' means. Didn't sign the Paris Agreement. Don't protest. Don't glue themselves to roads. They simply live the way eco-activists dream the whole world would live. For 300 years. Silently.