InsideClimate: The countries most responsible for global warming owe the rest of the world a tremendous debt, with the author of a new study published Monday in the journal Nature Climate Change putting the figure at $10 trillion.
The author came up with that number by calculating how much CO2 each country emitted per capita since 1960, generally recognized as the onset of the worst of human-caused global warming. Countries with high per capita emissions carry a carbon debt while countries with lower per capita...