A comparison of the carbon dioxide (in short, carbon) emissions across the G20 countries shows that, in 2010, the top three carbon emitter countries were Australia, USA, and Canada, with carbon emissions in per capita metric tonnes being 18.8, 18.1 and 16.3, respectively.
Brazil, Indonesia and India remain at the bottom among the G20 countries in terms of carbon emissions, with per capita contributions in 2010 being 2.3, 1.6 and 1.4 metric tonnes respectively, way below the developed countries.