Annual cumulative emissions along the shale gas production chain. Results for CH4, CO2, NOx and PM10 for Germany (GER, left) and the UK (right). REm and OEm are shown for the P50 case, while REm-U P25 and OEm-L P75 are also reported to show the emission boundaries. DOI: https://doi.org/10.1525/elementa.359.f6