About the Authors

Sarah Stewart Johnson

sarah.johnson@georgetown.edu

Affiliation Science, Technology, and International Affairs, Georgetown University, Washington, District of Columbia, United States of America

Marc Gerard Chevrette

Affiliation Graduate Program in Biotechnology and Bioengineering, Harvard University Extension, Cambridge, Massachusetts, United States of America

Bethany L. Ehlmann

Affiliations Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California, United States of America, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, United States of America

Kathleen Counter Benison

Affiliation Department of Geology and Geography, West Virginia University, Morgantown, West Virginia, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SSJ. Performed the experiments: SSJ BLE. Analyzed the data: SSJ MGC BLE. Contributed reagents/materials/analysis tools: SSJ MGC BLE KCB. Wrote the paper: SSJ MGC BLE KCB.