AUTHOR=Parente Alessandro , de Joannon Mara TITLE=Editorial: MILD Combustion: Modelling Challenges, Experimental Configurations, and Diagnostic Tools JOURNAL=Frontiers in Mechanical Engineering VOLUME=7 YEAR=2021 URL=https://www.frontiersin.org/journals/mechanical-engineering/articles/10.3389/fmech.2021.726633 DOI=10.3389/fmech.2021.726633 ISSN=2297-3079