of water vapor (HO), the most important greenhouse gases, as they are negligible compared to naturally occurring quantities. Space-based measurements of carbon dioxide should allow independent monitoring in the mid-2020s. Per capita emissions Fossil emissions by country/region Note: the point is a decimal point, so 1.000 Mt means 1 Mt, i.e. 1,000,000 tonne. See also List of countries by carbon dioxide emissions per capita List of countries by renewable electricity production List of countries by greenhouse gas emissions List of countries by greenhouse gas emissions per person Top contributors to greenhouse gas emissions General: World energy supply and consumption Notes and references External links Millennium Development Goals Indicators – United Nations Statistics Division GHG data from UNFCCC – United Nations Framework Convention on Climate Change greenhouse gas (GHG) emissions data CO emissions in kilotons – World Bank CO emissions in metric tons per capita – Google Public Data Explorer Carbon dioxide Carbon dioxide emissions Carbon dioxide emissions Carbon dioxide emissions Carbon dioxide emissions Carbon dioxide emissions