| 1 (137) | Carnegie Institution for Science * | USA |  |
| 2 (253) | United Nations International Children's Emergency Fund, United States | USA | |
| 3 (376) | National Bureau of Economic Research | USA | |
| 4 (392) | California Academy of Sciences | USA | |
| 5 (414) | Woods Hole Oceanographic Institution | USA | |
| 6 (434) | International Food Policy Research Institute United States | USA | |
| 7 (437) | Wildlife Conservation Society USA | USA | |
| 8 (443) | Southwest Research Institute | USA | |
| 9 (447) | Louisiana State University Agricultural Center | USA | |
| 10 (450) | Universities Space Research Association | USA | |
| 11 (465) | Santa Fe Institute | USA | |
| 12 (496) | Marine Biological Laboratory | USA | |
| 13 (500) | University Corporation for Atmospheric Research | USA | |
| 14 (512) | Monterey Bay Aquarium Research Institute | USA | |
| 15 (513) | Desert Research Institute, Reno | USA | |
| 16 (535) | Battelle Memorial Institute * | USA | |
| 17 (543) | RAND Corp | USA | |
| 18 (637) | Electric Power Research Institute | USA | |
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