The world can only emit a certain amount of carbon dioxide if we want a reasonable chance of limiting global warming to no more than 2°C (3.6 ˚F) above pre-industrial temperatures. (left) The location of the dots indicates how much carbon dioxide a country has already emitted (vertical axis, in billions of metric tons) versus its remaining population-based budget (horizontal axis). The United States, Brazil, Russia, and the European Union plus the United Kingdom (EU28) are all above the red diagonal line, meaning they have already "overspent." China and India are below the line, which means they have emitted less carbon dioxide to date than they would be allowed based on their population. (right) Red and gray bars compare how much a country has already emitted (red) and how much of its budget remains (gray). U.S. emissions to date dwarf its remaining national budget. NOAA Climate.gov graphic by Ben Everett-Lane, based on data from Our World in Data and World Bank.