2. Stanford University
3. Harvard University
4. California Institute of Technology?
5. Oxford University
6. Zurich Federal Institute of Technology?
7. Cambridge University?
8. London Imperial College London?
9. University of Chicago?
10, University College London
1 1, National University of Singapore
12, Princeton University
13, Nanyang Technological University
14, Federal Institute of Technology Lausanne
15, Tsinghua University
16, University of Pennsylvania
17, Yale University?
18, Cornell University
19, Columbia University?
20. University of Edinburgh?
2 1, University of Michigan at ann arbor
22. University of Hong Kong?
Peking University.
24. University of Tokyo?
25. Johns Hopkins University?