The UN's food and agriculture arm today advocated the use of jatropha for producing bio-diesel and said the crop can help farmers improve their financial condition in dry areas. "Using the energy crop jatropha for bio-diesel production could benefit poor farmers, particularly in semi-arid and remote areas of developing countries," said a report published by the Food and Agriculture Organisation (FAO) and the International Fund for Agricultural Development (IFAD). Jatropha curcas grows...

Ahead of next month's climate change negotiations in Copenhagen there's a lot of anger in India about the West's pressure on it to sign up to emissions cuts. The BBC's Sanjoy Majumder travelled to India's most industrialised state, Gujarat, to see at first hand some very effective - if homegrown - attempts at tapping renewable energy. In the middle of an open field, a man crouches over some cow dung and...