1. Department of Earth and Space Sciences University of Washington Seattle WA USA
2. Astrobiology Program University of Washington Seattle WA USA
3. School of Oceanography University of Washington Seattle WA USA
4. Department of Earth and Planetary Sciences McGill University QC Canada
5. Department of Microbiology University of Washington Seattle WA USA
6. Department of Ecology and Evolutionary Biology Princeton University Princeton NJ USA
7. Blue Marble Space Institute of Science Seattle WA USA
8. Exobiology Branch NASA Ames Research Center CA USA