In the EU limit global warming is discussed, which includes measures to limit global warming to 2 ° C, in contrast to adaptation to global warming, which provides measures to reduce global warming.

Global warming is reduced practically to limit CO2 concentrations to 400-500 ppm by volume. Values ​​in January 2007 are 383 ppm and 2 ppm annual increase. Very likely to avoid exceeding the 2 ° C would be that CO2 levels are stabilized immediately, which is not looming in the light of current programs. The proposed path is to reduce emissions of greenhouse gases by reducing energy consumption and use renewable energy.

Biomass

Biomass burning has been practiced since ancient times, people use wood as fuel. In terms of organic carbon cycle plant burn. Although the carbon burning content in them is released into the atmosphere as CO2, the carbon comes from CO2 in the atmosphere even, captured in the process of photosynthesis. So burning plants is a process of recycling of carbon, unlike fossil fuels, introducing new quantities of CO2 into the atmosphere. However burning wood is not a good solution because the rate of regeneration of trees is small, lasting about wood regeneration. 30 years. A workaround is burning corn; the crop recovers in a year. In this case corn plays a huge solar collector, ecological. To ensure the energy needs of growing corn is needed for combustion of approx. 15% of agricultural land. This option is supported by the American Corn Growers Association National Corn Growers and Association NGCA Burning can be done both in thermal and need to be fitted with suitable combustion fuel such as individual heating and burning corn instead of pellets, which are found in commercial installations.

Another way is the fermentation of corn for ethanol production, but it is considered a less efficient way.

All energy crops can be considered as sunflower, soybean and especially rapeseed oil obtained (biodiesel) can replace relatively simple fuel for diesel engines of motor vehicles.