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View Resource Garbage-Eating Geobacter

This Geotimes article highlights recent work done by Derek Lovley on the microbe Geobacter. The article discusses the ability of Geobacter to eat metal wastes as well as the prospect of using Geobacter as a microbial fuel cell. The web site also contains links to the Geotimes' home page, the American Geological Institute (AGI) home, and other useful AGI links.

View Resource Extremophilic Bacteria and Microbial Diversity

This online enhancement chapter of Raven and Johnson's Biology, a textbook for undergraduate majors, examines the many prokaryotic organisms that inhabit "extreme environments"┬Č├▒habitats in which some chemical or physical variable(s) differ significantly from that found in habitats that support plant and animal life. Topics include using new molecular techniques to discover more about bacteria; ...

View Resource Life in Extreme Environments (LExEn) Workshop Report

This is a draft report of the Life in Extreme Environments (LExEn) workshop held at the National Science Foundation. It proposes questions such as: What conditions determine the limits of life? What is the functional diversity of life? How does life evolve from pre-biotic conditions? With the purpose of determining an overall direction of LExEn for the future, it goes into detail about possible...

View Resource Geomicrobiology of Vostok Ice: Implications for Life in Lake Vostok

This abstract introduces newly discovered microbe assemblages within Lake Vostok and the research it has inspired. Current studies hope to gain insight into the following areas: physical stresses in deep glacial and accretion ice; the role of clathrates on gas dynamics within the lake; the origin of microbes in accretion ice; the physiological state of ice-bound microbes; the geochemistry of the...

View Resource The Microbial Arsenic Cycle in Mono Lake, California

This minireview summarizes the biogeochemical arsenic cycle in the alkaline, hypersaline Mono Lake. Some prokaryotes of the lake have evolved biochemical mechanisms to exploit arsenate and arsenite, using them either as an electron acceptor or as an electron donor, respectively, to support chemoautotrophic fixation of carbon dioxide into cell carbon.

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