|
National Bureau of Economic Research (United States)
41
|
RAND Corporation (United States)
12
|
Center for Strategic and International Studies (United States)
8
|
|
Ecologic Institute (Germany)
7
|
Overseas Development Institute (United Kingdom)
4
|
Third Generation Environmentalism (United Kingdom)
4
|
|
Urban Institute (United States)
2
|
Wuppertal Institute for Climate, Environment and Energy (Germany)
2
|
Centre for Energy Policy and Economics (Switzerland)
1
|
|
Centre for European Policy Studies (Belgium)
1
|
Chatham House (United Kingdom)
1
|
Stockholm Environment Institute (Sweden)
1
|
