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"People ignored what bacterial metabolism might be contributing," noted Andrew L. Neal, a geomicrobiologist at the University of Georgia's Savannah River Ecology Laboratory. "But now we know that many important geochemical reactions are driven by bacteria." BACTERIA ROCK Found in a geothermal spring in New Zealand, these silica formations are composed of layers of inorganic silica and layers of bacterial colonies. COURTESY OF LIANE BENNING The relationship between microorganisms and geochemistry was the subject of a symposium held last month at the American Chemical Society national meeting in New York City. The symposium was cosponsored by the Geochemistry, Environmental Chemistry, and Biological Chemistry Divisions. And it was co-organized by Neal and Craig Cooper, a geochemist at the Idaho National Engineering & Environmental Laboratory (INEEL). |
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