|
Pembina Institute (Canada)
29
|
Atlantic Council (United States)
19
|
Centre for Economic Policy Research (United Kingdom)
17
|
|
Center for Climate and Energy Solutions (United States)
16
|
Brookings Institution (United States)
12
|
National Bureau of Economic Research (United States)
12
|
|
RAND Corporation (United States)
11
|
Center for Strategic and International Studies (United States)
10
|
American Enterprise Institute (United States)
8
|
|
Mathematica Policy Research (United States)
8
|
Urban Institute (United States)
7
|
Fraser Institute (Canada)
6
|
|
Overseas Development Institute (United Kingdom)
4
|
Chatham House (United Kingdom)
3
|
World Resources Institute (United States)
2
|
|
Ecologic Institute (Germany)
1
|
Environment for Development Initiative (Sweden)
1
|
International Institute for Environment and Development (United Kingdom)
1
|
|
Resources for the Future (United States)
1
|
Science Policy Research Unit (United Kingdom)
1
|
