1. Department of Soil and Crop Science, Colorado State University, Fort Collins, CO, USA;
2. Department of Agronomy, University of Wisconsin-Madison, Madison, WI, USA;
3. Commonwealth Scientific and Industrial Research Organisation, Adelaide, Australia;
4. Australian Department of the Environment and Energy, Canberra, Australia;
5. The Carbon Cycle Institute, Petaluma, CA, USA;
6. Union of Concerned Scientists, Washington, DC, USA;
7. Scotland's Rural College, SRUC, Edinburgh, Scotland;
8. Agriculture and Agri-Food Canada, Lethbridge, Alberta, Canada;
9. International Institute for Applied Systems Analysis, Vienna, Austria;
10. Alberta Agriculture and Forestry, Edmonton, Alberta, Canada;
11. International Maize and Wheat Improvement Center, Texcoco, Mexico;
12. Commonwealth Scientific and Industrial Research Organisation, Brisbane, Australia;
13. United States Department of Agriculture, Natural Resources Conservation Service, Miles City, MT, USA;
14. Department of Geographical Sciences, University of Maryland, College Park, MD, USA;
15. Texas AgriLife Research, Texas A&M University, Temple, TX, USA;
16. Crop Research Institute, Prague, Czech Republic;
17. Agriculture and Agri-Food Canada, Swift Current, Saskatchewan, Canada;
18. Point Blue Conservation Science, Petaluma, CA, USA;
19. Department of Agronomy, Kansas State University, Manhattan, KS, USA;
20. National Agricultural and Food Centre, Soil Science and Conservation Research Institute, Bratislava, Slovakia