1. Department of Geology University of Illinois at Urbana–Champaign Champaign Illinois USA
2. Department of Plant Biology University of Illinois at Urbana–Champaign Urbana Illinois USA
3. Earth and Environment Boston University Boston Massachusetts USA
4. School of Earth and Atmospheric Sciences Georgia Institute of Technology Atlanta Georgia USA
5. College of Earth, Ocean, and Atmospheric Sciences Oregon State University Corvallis Oregon USA
6. Charles Darwin Research Foundation Puerto Ayora Ecuador
7. NASA Goddard Institute for Space Studies Columbia University New York New York USA