Methane

Methane is a simple hydrocarbon that consists of one carbon atom bonded to four hydrogen atoms. It is the primary component of natural gas and is also produced by a variety of natural and human-made processes. Methane is a potent greenhouse gas, with a much higher global warming potential than carbon dioxide. Although methane is less abundant in the atmosphere than carbon dioxide, it has a warming effect that is approximately 25 times greater over a 100-year time horizon. Human activities that contribute to methane emissions include the production and transport of fossil fuels, agriculture (especially livestock production), waste management, and natural sources such as wetlands. Reducing methane emissions is an important strategy for mitigating climate change.