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  2. Methane - Wikipedia

    en.wikipedia.org/wiki/Methane

    Methane is an organic compound, and among the simplest of organic compounds. Methane is also a hydrocarbon. Naturally occurring methane is found both below ground and under the seafloor and is formed by both geological and biological processes.

  3. Atmospheric methane - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_methane

    Atmospheric methane is the methane present in Earth's atmosphere. [2] ... They found that prior to approximately 900,000 years ago, ...

  4. Methane emissions - Wikipedia

    en.wikipedia.org/wiki/Methane_emissions

    Methane emissions occur in all sectors of the natural gas industry, from drilling and production, through gathering and processing and transmission, to distribution. These emissions occur through normal operation, routine maintenance, fugitive leaks, system upsets, and venting of equipment.

  5. Natural gas - Wikipedia

    en.wikipedia.org/wiki/Natural_gas

    Natural gas (also called fossil gas, methane gas or simply gas) is a naturally occurring mixture of gaseous hydrocarbons consisting primarily of methane (95%) [ 1 ] in addition to various smaller amounts of other higher alkanes. Traces of carbon dioxide, nitrogen, hydrogen sulfide, and helium are also usually present. [ 2 ]

  6. Abiogenic petroleum origin - Wikipedia

    en.wikipedia.org/wiki/Abiogenic_petroleum_origin

    The abiogenic petroleum origin hypothesis proposes that most of earth's petroleum and natural gas deposits were formed inorganically, commonly known as abiotic oil. [1] Scientific evidence overwhelmingly supports a biogenic origin for most of the world's petroleum deposits. [2][3] Mainstream theories about the formation of hydrocarbons on earth ...

  7. Methanogen - Wikipedia

    en.wikipedia.org/wiki/Methanogen

    Methanogen. Methanogens are anaerobic archaea that produce methane as a byproduct of their energy metabolism, i.e., catabolism. Methane production, or methanogenesis, is the only biochemical pathway for ATP generation in methanogens. All known methanogens belong exclusively to the domain Archaea, although some bacteria, plants, and animal cells ...

  8. Methanogenesis - Wikipedia

    en.wikipedia.org/wiki/Methanogenesis

    Methanogenesis or biomethanation is the formation of methane coupled to energy conservation by microbes known as methanogens.Organisms capable of producing methane for energy conservation have been identified only from the domain Archaea, a group phylogenetically distinct from both eukaryotes and bacteria, although many live in close association with anaerobic bacteria.

  9. Greenhouse gas emissions from wetlands - Wikipedia

    en.wikipedia.org/wiki/Greenhouse_gas_emissions...

    Greenhouse gas emissions from wetlands of concern consist primarily of methane and nitrous oxide emissions. Wetlands are the largest natural source of atmospheric methane in the world, and are therefore a major area of concern with respect to climate change. [1][2][3] Wetlands account for approximately 20–30% of atmospheric methane through ...