Expert warns that rapid rollout of anaerobic digestion plants to address looming shortage of crucial fertiliser

Delhi to host final meeting of Major Economies Forum ahead of Mexico Summit

US solar giant cements position as leading developer of utility-scale solar projects

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Government vows to invest $2.9bn by 2013 in dedicated clean tech R&D fund

Derry Newman, chief executive at Solarcentury, outlines how businesses can make money and save carbon through the government's new feed-in tariff scheme

Environment secretary Caroline Spelman to announce launch of palm oil research project

Two prototypes to be delivered to the Japanese auto giant by the end of the month

Share price rises almost seven per cent as speculation mounts over asset sales and possible takeover bid