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Science 10 May 2002:
Vol. 296. no. 5570, pp. 1071 - 1077
DOI: 10.1126/science.1010716
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Review

Geomicrobiology: How Molecular-Scale Interactions Underpin Biogeochemical Systems

Dianne K. Newman,1 Jillian F. Banfield2

Microorganisms populate every habitable environment on Earth and, through their metabolic activity, affect the chemistry and physical properties of their surroundings. They have done this for billions of years. Over the past decade, genetic, biochemical, and genomic approaches have allowed us to document the diversity of microbial life in geologic systems without cultivation, as well as to begin to elucidate their function. With expansion of culture-independent analyses of microbial communities, it will be possible to quantify gene activity at the species level. Genome-enabled biogeochemical modeling may provide an opportunity to determine how communities function, and how they shape and are shaped by their environments.

1 Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA.
2 Departments of Earth and Planetary Science and Environmental Science, Policy, and Management, University of California-Berkeley, Berkeley, CA 94720, USA.

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