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  2. Methane emissions - Wikipedia

    en.wikipedia.org/wiki/Methane_emissions

    The main sources of methane for the decade 2008–2017, estimated by the Global Carbon Project [17] "Methane global emissions from the five broad categories for the 2008–2017 decade for top-down inversion models and for bottom-up models and inventories (right dark coloured box plots).

  3. Greenhouse gas emissions by the United States - Wikipedia

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

    California's authority to set its own emissions standards is allowed through California's Clean Air Act preemption waiver granted to the state by the EPA in 2009. [84] California's waiver applies to vehicles made in 2009 and later. [84] The previous state standard included a goal for certain vehicles to reach an average 35 miles per gallon.

  4. Greenhouse gas emissions - Wikipedia

    en.wikipedia.org/wiki/Greenhouse_gas_emissions

    Methane has a high immediate impact with a 5-year global warming potential of up to 100. [5] Given this, the current 389 Mt of methane emissions [97]: 6 has about the same short-term global warming effect as CO 2 emissions, with a risk to trigger irreversible changes in climate and ecosystems. For methane, a reduction of about 30% below current ...

  5. List of U.S. states and territories by carbon dioxide emissions

    en.wikipedia.org/wiki/List_of_U.S._states_and...

    This is a list of U.S. states and territories by carbon dioxide emissions for energy use, [1] [2] as well as per capita [3] [4] and by area. [5] The state with the highest total carbon dioxide emissions is Texas and the lowest is Vermont. The state with the highest per capita carbon dioxide emissions is Wyoming and the lowest is New York.

  6. Methane - Wikipedia

    en.wikipedia.org/wiki/Methane

    Methane (US: / ˈ m ɛ θ eɪ n / METH-ayn, UK: / ˈ m iː θ eɪ n / MEE-thayn) is a chemical compound with the chemical formula CH 4 (one carbon atom bonded to four hydrogen atoms). It is a group-14 hydride, the simplest alkane, and the main constituent of natural gas.

  7. List of locations and entities by greenhouse gas emissions

    en.wikipedia.org/wiki/List_of_locations_and...

    Emissions attributed to specific power stations around the world, color-coded by type of fuel used at the station. Lower half focuses on Europe and Asia [1]. This article is a list of locations and entities by greenhouse gas emissions, i.e. the greenhouse gas emissions from companies, activities, and countries on Earth which cause climate change.

  8. Climate change policy of California - Wikipedia

    en.wikipedia.org/wiki/Climate_change_policy_of...

    It required the State Air Resources Board to establish a program for statewide greenhouse gas emissions reporting and to monitor and enforce compliance with this program, authorizes the state board to adopt market-based compliance mechanisms [11] including cap-and-trade, and allows a one-year extension of the targets under extraordinary ...

  9. Greenhouse gas - Wikipedia

    en.wikipedia.org/wiki/Greenhouse_gas

    This is an accepted version of this page This is the latest accepted revision, reviewed on 10 January 2025. Gas in an atmosphere with certain absorption characteristics This article is about the physical properties of greenhouse gases. For how human activities are adding to greenhouse gases, see Greenhouse gas emissions. Greenhouse gases trap some of the heat that results when sunlight heats ...