Alla Katsnelson | May 1, 2009 | 10+ min read
LOV story Even nonphotosynthetic bacteria respond to light in surprising ways. Have scientists found a new ubiquitous signaling mechanism? By Alla Katsnelson Original image: © Yves Brun / artistically modified by The Scientist aulobacter crescentus isn't much to look at. When you peek through a microscope at 630-times magnification, the freshwater bacteria appear as a swarm of little gray, kidney-shaped creatures fli