1. Earth Systems Science Division, Pacific Northwest National Laboratory, Richland, Washington, USA
2. Department of Environmental Studies, University of Colorado Boulder, Boulder, Colorado, USA
3. Department of Sociology, University of Northern Colorado, Greeley, Colorado, USA
4. College of Education and Human Development, Lamar University, Beaumont, Texas, USA
5. Department of Geology and Geophysics, Texas A&M University, College Station, Texas, USA
6. College of Natural Resources and Sciences, California State Polytechnic University, Humboldt, Arcata, California, USA