AUTHOR=Grogan Dennis W. TITLE=Editorial: Mechanisms of Preservation and Change in Archaeal Genomes JOURNAL=Frontiers in Microbiology VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2021.722509 DOI=10.3389/fmicb.2021.722509 ISSN=1664-302X