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  1. Methane - Wikipedia

    Methane is an organic hydrocarbon, and among the simplest of organic compounds. Naturally occurring methane is found both below ground and under the seafloor and is formed by both …

  2. Methane | Definition, Properties, Uses, & Facts | Britannica

    Dec 21, 2025 · Methane, colorless, odorless gas that occurs abundantly in nature and as a product of certain human activities. Methane is the simplest member of the paraffin series of …

  3. Importance of Methane - US EPA

    Mar 3, 2025 · Methane (CH 4) is a hydrocarbon that is a primary component of natural gas. Methane is also a greenhouse gas (GHG), so its presence in the atmosphere affects the …

  4. Methane - Earth Indicator - NASA Science

    Sep 25, 2025 · Methane (CH4) is a potent greenhouse gas and is the second-largest contributor to Earth's warming after carbon dioxide (CO2). A molecule of methane traps more heat than a …

  5. Methane - Center for Science Education

    Methane accounts for about 20% of the heating effects by all of the greenhouse gases combined. Both natural and human sources supply methane to Earth's atmosphere. Major natural …

  6. Methane facts and information | National Geographic

    Cows and bogs release methane into the atmosphere, but it's by far mostly human activity that's driving up levels of this destructive greenhouse gas.

  7. Topic: Methane Emissions — U.S. Greenhouse Gas Center

    About Methane Methane is a greenhouse gas emitted by a complex mix of natural sources and human activities. Although it is shorter-lived than carbon dioxide in the atmosphere, the …

  8. What is methane and why is it a safety concern?

    What is methane and why is it a safety concern? Methane (a gas composed of carbon and hydrogen) is produced two ways: Through biologic decomposition of organic matter at shallow …

  9. Methane | Climate & Clean Air Coalition

    Methane is a powerful greenhouse gas and short-lived climate pollutant (SLCP) primarily emitted by human activities. It has an atmospheric lifetime of around 12 years.

  10. Facts about Methane - UNEP - UN Environment Programme

    Jul 19, 2024 · Methane (CH4), the primary component of natural gas, is responsible for approximately a third of the warming we are experiencing today.