|
Urban Institute (United States)
68
|
National Bureau of Economic Research (United States)
39
|
Brookings Institution (United States)
34
|
|
Centre for Economic Policy Research (United Kingdom)
9
|
World Resources Institute (United States)
7
|
Centre for International Governance Innovation (Canada)
6
|
|
Center on Global Energy Policy (United States)
4
|
Resources for the Future (United States)
4
|
Center for Education Policy Analysis (United States)
3
|
|
Center for American Progress (United States)
2
|
Centre for Energy Policy and Economics (Switzerland)
2
|
Environment for Development Initiative (Sweden)
2
|
|
International Institute for Environment and Development (United Kingdom)
2
|
International Institute for Sustainable Development (Canada)
2
|
Mathematica Policy Research (United States)
2
|
|
Science Policy Research Unit (United Kingdom)
2
|
American Enterprise Institute (United States)
1
|
Atlantic Council (United States)
1
|
|
Basque Centre for Climate Change (Spain)
1
|
Carnegie Endowment for International Peace (United States)
1
|
