AUTHOR=Spier Fred TITLE=Commentary: Book Review: Big History and the Future of Humanity JOURNAL=Frontiers in Physics VOLUME=5 YEAR=2017 URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2017.00035 DOI=10.3389/fphy.2017.00035 ISSN=2296-424X