2. Harvard University, USA
3. University of Oxford, UK
4. Stanford University, USA
5. University of Cambridge, UK
6. University of California, Berkeley, USA
7. Imperial College London, UK
8. University of Pennsylvania, USA
9. California Institute of Technology (Caltech), USA
10. Princeton University, USA
11. Yale University, USA
12. Columbia University, USA
13. UCL (University College London), UK
14. ETH Zurich – Swiss Federal Institute of Technology, SWZ
15. University of Chicago, USA
16. National University of Singapore, Singapore
17. John Hopkins University, USA
18. University of California, Los Angeles (UCLA), USA
19. Cornell University, USA
20. Tsinghua University -China
