ReducingMethaneEmissionsfromGlobalGasPolicy,Markets,andEcosystemsBenCahillExecutiveSummary•Becausemethaneisapotentbutshort-livedclimatepollutant,cuttingmethaneemissionsisoneofthemostpowerfulleverstoslowthepaceofglobalwarminginthenextdecade.•ProposedrulesandlegislationintheUnitedStatesandtheEuropeanUnionwouldrequireoilandgascompaniestoenhancetheirmethanemonitoring,addressleaks,andlimitventingandflaring.•Methanedetectiontechnologyisrapidlyimproving,withanarrayofground-baseddetection,drone-andairplane-basedsurveys,andsatellitetechnologyabletopinpointmethaneemissions.•Rapidtechnologicaldevelopmentsmakeitchallengingtodesignregulationsthatencourageoperators...