One of the six greenhouse gases  to be mitigated under the Kyoto Protocol Methane is the major component of natural gas and associated with all hydrocarbon fuels. Significant anthropogenic emissions also occur as a result of animal husbandry and paddy rice production. Methane is also produced naturally where organic matter decays under anaerobic conditions, such as in wetlands. Under future global warming, there is risk of increased methane emissions from thawing permafrost, coastal wetlands and sub-sea gas hydrates.
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report