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Oil and gas production is one of the top sources of methane emissions. (Credit: iStock) What is the cost of 1 ton of a greenhouse gas? When a climate-warming gas such as carbon dioxide or methane is emitted into the atmosphere, its impacts may be felt years and even decades into the future – in the form of rising sea levels, changes in agricultural productivity, or more extreme weather events, such as droughts, floods, and heat waves. Those impacts are quantified in a metric called the “social cost of carbon,” considered a vital tool for making sound and efficient climate policies. Now a new study by a team including researchers from Lawrence Berkeley National Laboratory (Berkeley Lab) and UC Berkeley reports that the social cost of methane – a greenhouse gas that is 30 times as potent as carbon dioxide in its ability to trap heat – varies by as much as an order of magnitude between industrialized and developing regions of the world.

United statesDepartment of energyDistrict of columbiaWhite houseWilliam collinsKlaus kellerVivek srikrishnanDavid anthoffFrank erricksonUniversity of californiaUc berkeley energyNational science foundationSloan foundationOffice of scienceEcosystem sciences divisionResources group