AUTHOR=Sweetman Andrew TITLE=A Grand Challenge for Environmental Organic Chemistry: How Can We Avoid Regrettable Substitution? JOURNAL=Frontiers in Environmental Chemistry VOLUME=1 YEAR=2020 URL=https://www.frontiersin.org/journals/environmental-chemistry/articles/10.3389/fenvc.2020.00007 DOI=10.3389/fenvc.2020.00007 ISSN=2673-4486