It turns out that emissions are growing and processing biofuels, some of significantly reducing their benefits, taking into account factors such as fertilizers made from fossil fuels.

He also increased by large sections of forest and grassland will be cut or burned to cultivate energy - and to grow food that has been driven by growing energy crops elsewhere - and thus free up additional stocks of carbon in the atmosphere.

Olivier De Schutter, Special Rapporteur on the Right to Food of the United Nations, is one of the experts who said the pressure on agricultural land demand for biofuels is an important factor in food prices have exacerbated the problems hunger and social development in some of the poorest countries over the past three years.