Acid rain cuts greenhouse gases in pollution paradox

Acid rain caused by industrial pollution could actually help reduce the greenhouse gas emissions of agriculture, say scientists.

Research led by the Open University's Dr Vincent Gauci suggests that sulphur-based acid rain from atmospheric pollution could cut the methane emissions associated with cultivating rice by almost a quarter.

Tonne for tonne, methane is more than 20 times more potent than carbon dioxide in terms of global warming.