| 1 (319) | National Bureau of Economic Research | USA |  |
| 2 (561) | Carnegie Institution for Science | USA | |
| 3 (574) | American Institute of Aeronautics and Astronautics | USA | |
| 4 (579) | Kavli Institute for Particle Astrophysics and Cosmology | USA | |
| 5 (638) | Institute for Advanced Study | USA | |
| 6 (906) | RAND Corporation | USA | |
| 7 (943) | Woods Hole Oceanographic Institution | USA | |
| 8 (992) | SETI Institute | USA | |
| 9 (1063) | Regenstrief Institute | USA | |
| 10 (1071) | The EARLY Program Mind Research Network | USA | |
| 11 (1313) | SRI International | USA | |
| 12 (1408) | Santa Fe Institute | USA | |
| 13 (1487) | Marine Biological Laboratory | USA | |
| 14 (1544) | Planetary Science Institute | USA | |
| 15 (1684) | Wildlife Conservation Society USA | USA | |
| 16 (1783) | Monterey Bay Aquarium Research Institute | USA | |
| 17 (1916) | Space Science Institute | USA | |
| 18 (1973) | Bill and Melinda Gates Foundation | USA | |
| 19 (2116) | Universities Space Research Association | USA | |
| 20 (2126) | International Monetary Fund | USA | |
| 21 (2508) | Desert Research Institute, Reno | USA | |
| 22 (2789) | Louisiana State University Agricultural Center | USA | |
| 23 (2834) | Southwest Research Institute | USA | |
| 24 (3749) | California Academy of Sciences | USA | |
| 25 (3847) | Battelle Memorial Institute | USA | |
| 26 (4388) | Electric Power Research Institute | USA | |
|
