AUTHOR=Hou Harvey J. M. , Allakhverdiev Suleyman I. , Najafpour Mohammad M. , Govindjee TITLE=Current challenges in photosynthesis: from natural to artificial JOURNAL=Frontiers in Plant Science VOLUME=5 YEAR=2014 URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2014.00232 DOI=10.3389/fpls.2014.00232 ISSN=1664-462X