The concepts described on these pages are words and expressions used in statistics with a specific, limited meaning. In everyday speech the word may have a different meaning. In connection with each definition you can find information about which sets of statistics use the concept.
If you are looking for statistical figures, go from the definition to the statistics page.
Carbon dioxide (CO2) is the most significant greenhouse gas produced by humankind. Most carbon dioxide produced by humankind originates from the use of fossil fuels (including oil, coal and natural gas). Another important source of emissions is the destruction of tropical forests and other land-use changes.
Statistics using the definition
Validity of the definition
- Valid until (31 December 2078)