Specific CO2 emissions per tonne-km and per mode of transport in Europe, 1995-2011 — European Environment Agency
Auction prices for regional carbon dioxide allowances have increased since the 2017 low - Today in Energy - U.S. Energy Information Administration (EIA)
![The New campaign 1 Ton CO2 Less. Every person should use this amount less in private life. | International Club Copenhagen The New campaign 1 Ton CO2 Less. Every person should use this amount less in private life. | International Club Copenhagen](http://4.bp.blogspot.com/_IxVeuC8igyI/RiuCs83jvgI/AAAAAAAAAQs/t8wZeGy9cSg/s320/!+1+Ton+Mindre+++CO2+1.jpg)
The New campaign 1 Ton CO2 Less. Every person should use this amount less in private life. | International Club Copenhagen
![What is a "ton" of carbon dioxide anyway? | A New Shade of Green | Sherry Listgarten | Palo Alto Online What is a "ton" of carbon dioxide anyway? | A New Shade of Green | Sherry Listgarten | Palo Alto Online](https://www.paloaltoonline.com/blogs/photos/44/3500.jpg)