AUTHOR=Hollmann Frank , Fernandez‐Lafuente Roberto TITLE=Grand Challenges in Biocatalysis JOURNAL=Frontiers in Catalysis VOLUME=1 YEAR=2021 URL=https://www.frontiersin.org/journals/catalysis/articles/10.3389/fctls.2021.633893 DOI=10.3389/fctls.2021.633893 ISSN=2673-7841