Felisa Wolfe-Simon and Ronald Oremland, US Geological Survey (IMAGE)

Arizona State University

Felisa Wolfe-Simon and Ronald Oremland, US Geological Survey

Caption

Felisa Wolfe-Simon, right, a NASA astrobiology research fellow in residence at the USGS, and Ronald Oremland, an expert in arsenic microbiology at the USGS, examine sediment in August 2009 from Mono Lake in eastern California. Wolfe-Simon and Oremland are members of the NASA Astrobiology Institute “Follow the Elements” team at Arizona State University. Wolfe-Simon is lead author of findings published in the Dec. 2, 2010, online Science Express, under the title "A bacterium that can grow by using arsenic instead of phosphorus."

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© 2009 Henry Bortman

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