Text and Data Mining valid from 2017-01-16
Received: 19 July 2016
Accepted: 21 November 2016
First Online: 16 January 2017
: Four co-authors (D.Z.-A., R.A.A., D.R.L. and S.P.H.) work for Environmental Defense Fund (EDF), a non-profit organization funded by philanthropic contributions, which does not accept donations from the oil/gas industry in accordance with its corporate donations policy (). The other co-authors were lead investigators in separate projects focused on quantifying methane emissions from the U.S. natural gas supply chain, sponsored in part by EDF (D.T.A., A.J.M. and D.J.Z.), companies in the oil and gas industry (D.T.A., A.J.M. and D.J.Z.) and the US Department of Energy (A.J.M. and D.J.Z.). One author (D.T.A.) has served as a paid Special Governmental Employee, while chair of the EPA’s Science Advisory Board, and has consulted for multiple companies, including Eastern Research Group, ExxonMobil and Research Triangle Institute. Another author (S.P.H.) serves as a paid Special Governmental Employee, while serving on the EPA’s Science Advisory Board.