Methane and climate change Methane is a powerful greenhouse gas and is estimated to be responsible for approximately one fifth of man made global warming. Per kilogram it is 25 times more powerful than carbon dioxide over a 100 year time horizon and global warming is likely to enhance methane release from a number of sources. Current natural and man made sources include many where methane producing micro organisms can thrive in anaerobic conditions particularly ruminant livestock rice cultivation landfill wastewater wetlands and marine sediments. This timely and authoritative book provides the only comprehensive and balanced overview of our current knowledge of sources of methane and how these might be controlled to limit future climate change. It describes how methane is derived from the anaerobic metabolism of micro organisms whether in wetlands or rice fields manure landfill or wastewater or the digestive systems of cattle and other ruminant animals. It highlights how sources of methane might themselves be affected by climate change. It is shown how numerous point sources of methane have the potential to be more easily addressed than sources of carbon dioxide and therefore contribute significantly to climate change mitigation in the 21st century. Publishers description