|
National Bureau of Economic Research (United States)
548
|
RAND Corporation (United States)
157
|
Urban Institute (United States)
107
|
|
Brookings Institution (United States)
96
|
Center for Strategic and International Studies (United States)
30
|
Overseas Development Institute (United Kingdom)
20
|
|
American Enterprise Institute (United States)
14
|
Center for American Progress (United States)
13
|
Atlantic Council (United States)
7
|
|
E3G – Third Generation Environmentalism (United Kingdom)
7
|
Fraser Institute (Canada)
7
|
International Institute for Sustainable Development (Canada)
7
|
|
World Resources Institute (United States)
7
|
International Institute for Environment and Development (United Kingdom)
6
|
Resources for the Future (United States)
6
|
|
Institute for Global Environmental Strategies (Japan)
4
|
Stockholm Environment Institute (Sweden)
4
|
Centre for Economic Policy Research (United Kingdom)
2
|
|
Science Policy Research Unit (United Kingdom)
2
|
Carnegie Endowment for International Peace (United States)
1
|
