Fig. 4.

Regional emission distributions in 2030, revealing the number of individuals above the cap of 10.8 tCO₂/yr (corresponding to a global target of 30 GtCO₂ in 2030). The regional efforts are comparable: The U.S. has 270 million people who, relative to “Business As Usual” for 2030, in aggregate reduce emissions by 4.4 GtCO₂; the OECD minus U.S. has 280 million who reduce 2.1 GtCO₂; China has 300 million who reduce 2.9 GtCO₂; and the non-OECD minus China has 280 million who reduce 3.5 GtCO₂.