To stop global warming, we've got to live as we did in 1870

The U.K.-based Carbon Footprint consultancy claims that to stop global warming each person on Earth should be limited to emitting only two tons of carbon per year. The average American emits more than 20 tons annually while going about his business in a highly productive, developed society...

What countries already keep per capita carbon dioxide emissions below two tons a year? Climate champions include Togo (per capita GDP: $900), Bangladesh ($1,500), Ethiopia ($800), Uganda ($1,100), and Mali ($1,200). The last time Americans emitted as little as 2.5 tons of carbon dioxide per capita was in 1870.