Policy Briefs Overarching Visions G20 Policy Areas About Jonathan SternDistinguished Research Fellow, Oxford Institute for Energy Studies, UKPolicy Briefs G20 Saudi Arabia 2020 Measurement, reporting, verification, and certification of methane emissions from fossil fuel production and natural gas value chains TF2 - Climate Change and EnvironmentPolicy area: Climate, Energy and Environment Bassam Fattouh (Oxford Institute for Energy Studies), James Henderson (Director Natural Gas Research Programme, Oxford Institute for Energy Studies, UK), Jonathan Stern (Distinguished Research Fellow, Oxford Institute for Energy Studies, UK)