Talk of China's green revolution belies its voracious energy grab

All the talk is about China’s green revolution at the moment, but everywhere I turn it seems to be gobbling up another multi-billion pound gas contract or oil company.

Officials may be making all the environmentally-correct noises ahead of the G20 summit later this month, but out of an estimated $46.5bn (£28bn) spent on international oil and gas acquisitions in the first four months of this year, China accounted for $45bn.