This table displays the Carbon economic efficiency for 141 countries in metric tons per U.S. dollar of gross domestic product (GDP). The data can be displayed in order by rank (first to last), or in alphabetical order. Each country’s name is a link to additional environmental statistics about it: CO2 emissions, ecological footprint, endangered species, and others. There is also a link to an interactive world map that provides access to geographic, cultural, and historic information about each country.