AUTHOR=Dumas Claire , Ottosen Lars Ditlev Mørck , Escudié Renaud , Jensen Paul TITLE=Editorial: Biological Methanation or (Bio/Syn)-Gas Upgrading JOURNAL=Frontiers in Energy Research VOLUME=8 YEAR=2020 URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2020.00030 DOI=10.3389/fenrg.2020.00030 ISSN=2296-598X