Top 20 Universities:

1. Massachusetts Institute of Technology (MIT)

2. Harvard University

3. University of Cambridge

4. University College London (UCL)

5. Imperial College London

6. University of Oxford

7. Stanford University

8. Yale University

9. University of Chicago

10=. California Institute of Technology (Caltech)

11=. Princeton University

12. Eth Zurich (Swiss Federal Institute of Technology)

13. University of Pennsylvania

14. Columbia University

15. Cornell University

16. Johns Hopkins University

17=. University of Edinburgh

18=. University of Toronto

19=. Ecole Polytechnique Fédérale de Lausanne

20=. King's College London.