image: The bumble bee Bombus appositus from the United States. This material relates to a paper that appeared in the 29 March 2017, issue of Science Advances, published by AAAS. The paper, by W.K. Kwong at Yale University in New Haven, Conn., and colleagues was titled, 'Dynamic microbiome evolution in social bees.' view more
Credit: [Credit: Nancy A. Moran]