The UK is to slow its adoption of biofuels amid fears they raise food prices and harm the environment, the transport secretary has said.
Ruth Kelly said biofuels had potential to cut carbon emissions but there were "increasing questions" about them.
"Uncontrolled" growing of fuel crops could destroy rainforest, she told MPs.
A government-commissioned report recommends ministers "amend not abandon" biofuel policies. The Tories said policy had to change "right now".
'Important role'
Ms Kelly's statement comes as the European Parliament is about to vote on whether to scrap the EU's target of sourcing 10% of transport fuel from biofuels by 2020.
World Bank president Robert Zoellick has also called for reform in rich countries, urging them to grow more food instead.
