SciDev.Net: Global methane emissions from rice paddies could be cut by 30 per cent if fields are drained at least once during the growing season and rice crop waste is applied off-season, according to a study. Methane is a significant contributor to global warming and is produced by certain types of bacteria in oxygen-deprived environments – such as those feeding on the organic waste in water-covered rice paddies. “Draining allows organic material to decompose aerobically as it is not …