|
National Bureau of Economic Research (United States)
41
|
Mathematica Policy Research (United States)
31
|
Centre for Economic Policy Research (United Kingdom)
17
|
|
International Institute for Environment and Development (United Kingdom)
16
|
Konrad Adenauer Foundation (Germany)
16
|
RAND Corporation (United States)
15
|
|
Center for International Development (United States)
13
|
German Development Institute (Germany)
13
|
Wuppertal Institute for Climate, Environment and Energy (Germany)
13
|
|
Ecologic Institute (Germany)
12
|
Center for Strategic and International Studies (United States)
9
|
Stockholm Environment Institute (Sweden)
7
|
|
Third Generation Environmentalism (United Kingdom)
5
|
Center for Environmental Research (Germany)
4
|
Institute for European Environmental Policy (United Kingdom)
4
|
|
Overseas Development Institute (United Kingdom)
4
|
Agora Energiewende (Germany)
3
|
Chatham House (United Kingdom)
3
|
|
Science Policy Research Unit (United Kingdom)
3
|
Urban Institute (United States)
3
|
