Methane emissions
60 percent of methane emissions are caused by humans and livestock animals, while natural sources such as wetlands cause about 40 percent of methane emissions. Human sources include agriculture, especially animal agriculture and rice production, waste, and fugitive emissions from industry including the energy sector. Grazing animals such as cattle and sheep along with other livestock animals cause at least 30 percent of unnatural methane emissions. Fugitive emissions from oil, natural gas and coal contributes about 25 to 34 percent of unnatural methane emissions. Human waste including landfill and wastewater cause about 18 percent of unnatural methane emissions. Rice production causes about 7 to 20 percent of unnatural emissions. Wetlands make up about 30 percent while natural sources other than wetlands account for about 10 percent. This includes emissions near oil and gas deposits unrelated to human activity, volcanic activity, and emissions by termites.
Methane emissions-2