Production of corn and Soya beans has increased dramatically in the last years as an eco-friendly alternative to fossil fuels but environmental and human right campaigns are worried that this will lead to the destruction of rain forests. Food prices could also go up as there is increased competition for crops as both foodstuffs and sources of fuel. Recently, the UN Warned that biofuels could have a dangerous side that steps need to be taken to make sure that land converted to grow bio-fuels does not damage the environment or cause civil unrest. There is already great concern about palm oil, which is used in many foods in addition to being an important biofuel, as rain forests are being cleared in some countries and people are driven from their homes to create palm oil plantations.