Cellulosic ethanol hits roadblocks – Premium content

How the financial crisis is slowing efforts to commercialize next-generation ethanol.

Climate change will hit developing world harvests hardest

Report quantifies link between global warming and food security.

Exclusive: Iranian ministers in plagiarism row

Nature investigation reveals duplications in papers by science and transport chiefs.

Chinese dam may be a methane menace

Wetlands around Three Gorges produce tonnes of the greenhouse gas.

US agriculture research gets priority plan – Premium content

Federal restructuring aims to lessen the influence of pork-barrel politics.