AUTHOR=Artini Cristina, Mele Paolo, Imanaka Nobuhito TITLE=Editorial: Toward Sustainable Energy: The Unique Role of Rare Earth Oxides JOURNAL=Frontiers in Chemistry VOLUME=7 YEAR=2019 URL=https://www.frontiersin.org/articles/10.3389/fchem.2019.00478 DOI=10.3389/fchem.2019.00478 ISSN=2296-2646