Contrary to persistent claims by environmentalists, Methane is not an important greenhouse gas (GHG); it has a totally negligible impact on climate. Attempts to control methane emissions make little sense; the just-announced [Jan 14] White House plan to reduce emissions by 40 to 45% by 2025 ignores well-established ‘text-book’ science.
Methane (chemical formula CH4) is the main component of natural gas. It may technically be defined as a greenhouse gas since it absorbs strongly in some portions of the infrared spectrum; but its impact on climate is insignificant. Its atmospheric level has been increasing because about half of the methane is produced by processes related to human activities, such as cattle raising, rice agriculture, landfills, and the production of oil and natural gas; it is also released in coal mining and from leaky natural gas pipelines. The major non-human sources include swamps and bogs.