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| 2015 | 2014 | Institution | Country |
|---|---|---|---|
| 11 | 11 | Massachusetts Institute of Technology (MIT) | US |
| 22 | 44 | Harvard University | US |
| 3=3= | 2=2= | University of Cambridge | UK |
| 3=3= | 77 | Stanford University | US |
| 55 | 88 | California Institute of Technology ( CALTECH) | US |
| 66 | 5=5= | University of Oxford | UK |
| 77 | 5=5= | UCL University College London | UK |
| 88 | 2=2= | Imperial College London | UK |
| 99 | 1212 | ETH Zurich (Federal Swiss Institute of Technology) | Switzerland |
| 1010 | 1111 | University of Chicago | USA |
