|
National Bureau of Economic Research (United States)
49
|
Urban Institute (United States)
48
|
Overseas Development Institute (United Kingdom)
37
|
|
Brookings Institution (United States)
22
|
Center for Strategic and International Studies (United States)
18
|
Center for American Progress (United States)
17
|
|
International Institute for Environment and Development (United Kingdom)
6
|
Institute for Global Environmental Strategies (Japan)
3
|
RAND Corporation (United States)
3
|
|
Environment for Development Initiative (Sweden)
2
|
Fraser Institute (Canada)
2
|
Property and Environment Research Center (United States)
2
|
|
Wuppertal Institute for Climate, Environment and Energy (Germany)
2
|
Institute of Energy Economics, Japan (Japan)
1
|
Resources for the Future (United States)
1
|
|
Science Policy Research Unit (United Kingdom)
1
|
