Rice -- Asia's most important staple -- is to blame for around 10 percent of global emissions of methane, a gas that over two decades, traps about 80 times as much heat as carbon dioxide. Scientists say that if the world wants to reduce greenhouse gas emissions, rice cannot be ignored. Vietnam has been showing efforts to reduce methane from rice cultivation by removing straw from the fields and turning it into mushrooms and organic fertiliser. IMAGES AND SOUNDBITES ARRANGED IN SEQUENCES