Sustainable biofuels
There are many biofuel options which are available.  Biofuels, such as ethanol and biodiesel, are currently produced from the products of conventional food crops such as the starch, sugar and oil feedstocks from crops that include wheat, maize, sugar cane, palm oil and oilseed rape. Any major switch to biofuels from such crops would create a direct competition with their use for food and animal feed, and in some parts of the world we are already seeing the economic consequences of such competition.