Biofuels harm the planet more than fossil fuels, and even lead to greater deforestation, according to areport put out this month by the British think tank Chatham House. The study also said that biofuels are far less cost effective than traditional fuels.

The think tank said that sticking with traditional fossil fuels might actually be better for the environment, since the use of cooking oil as an alternative fuel leads to higher imports of palm oil from Indonesia, a product often grown on deforested land.