1. Washington State University, Pullman, WA 99164, USA.
2. Woods Institute for the Environment, Stanford University, Stanford, CA 94305, USA.
3. Social and Environmental Research Institute, Greenfield, MA 01301, USA.
4. Carnegie Mellon University, Pittsburgh, PA 15213, USA.
5. Lehigh University, Bethlehem, PA 18015, USA.
6. The Loka Institute, Amherst, MA 01002, USA.
7. University of Notre Dame, Notre Dame, IN 46556, USA.
8. University of Tennessee, Knoxville, TN 37996, USA.
9. Clark University, Worcester, MA 01610, USA.
10. University of Washington, Seattle, WA 98105, USA.
11. University of California, Santa Barbara, CA 93106, USA.
12. Rutgers University, New Brunswick, NJ 08901, USA.
13. Yale University, New Haven, CT 06520, USA.