It is one measure to cut emissions of greenhouse effect and to reduce gases like carbon dioxide (CO2). The aim is to reduce the impact of climate change, as well as Europe's dependence on fossil fuels. This is one of many technologies we can bring to reduce CO2 emissions and also our dependency on oil. Denmark is already a leader in green energy. Biofuel will offer an 85% cut in carbon emissions. Cars save about 120kg of carbon dioxide every year (from using the "bio" petrol). There are other costs, too. Large parts of Indonesian forest were being destroyed. The individual acts addressing climate change are very important, but is also important, that the politicians have to change the actually laws quickly because our world is dying.