The traditional view is that most of the methane that causes Greenhouse Effect comes from wetlands and the digestive tract of ruminants, but green plants that can absorb carbon dioxide also release methane
Scientists have found that the astonishing result is that the annual amount of methane released by the world's green plants is 60 million to 240 million tons, accounting for 10% to 40% of the world's total annual methane emissions, of which about 2/3 come from tropical areas with rich vegetation
German scientists have observed methane clouds over the rainforest by satellite, a phenomenon that cannot be explained by known global sources of methane