AUTHOR=Elgar Mark A. TITLE=Integrating insights across diverse taxa: challenges for understanding social evolution JOURNAL=Frontiers in Ecology and Evolution VOLUME=3 YEAR=2015 URL=https://www.frontiersin.org/journals/ecology-and-evolution/articles/10.3389/fevo.2015.00124 DOI=10.3389/fevo.2015.00124 ISSN=2296-701X