AUTHOR=Mason Robert Peter TITLE=Grand Challenge for Frontiers in Environmental Chemistry—Inorganic Pollutants JOURNAL=Frontiers in Environmental Chemistry VOLUME=1 YEAR=2020 URL=https://www.frontiersin.org/journals/environmental-chemistry/articles/10.3389/fenvc.2020.00002 DOI=10.3389/fenvc.2020.00002 ISSN=2673-4486