|
Wuppertal Institute for Climate, Environment and Energy (Germany)
54
|
Hague Centre for Strategic Studies (Netherlands)
53
|
RAND Corporation (United States)
30
|
|
Center for Strategic and International Studies (United States)
25
|
Brookings Institution (United States)
19
|
American Enterprise Institute (United States)
10
|
|
Center for Environmental Research (Germany)
2
|
World Resources Institute (United States)
2
|
Centre for Energy Policy and Economics (Switzerland)
1
|
|
Environment for Development Initiative (Sweden)
1
|
Fraser Institute (Canada)
1
|
Resources for the Future (United States)
1
|
