image: Effluent channel of Mushroom Spring, an alkaline siliceous hot spring in Yellow Stone National Park. This image relates to an article that appeared in the July 27, 2007, issue of the journal Science, published by AAAS. The study, by Dr. Donald A. Bryant and colleagues of Pennsylvania State University in University Park, Pa., was titled "Candidatus Chloracidobacterium Thermophilum: An Aerobic Phototrophic Acidobacterium." view more
Credit: Photo provided by David M.Ward, via <i>Science</i>-AAAS.