1
California Institute of Technology
2
University of Texas--Austin
3
University of California--Berkeley
4
Massachusetts Institute of Technology
5
Stanford University
5
University of Arizona
7
University of Colorado--Boulder
8
Arizona State University
8
Colorado School of Mines
10
Pennsylvania State University--University Park
10
University of Michigan--Ann Arbor
12
University of California--Los Angeles
13
Columbia University
13
Harvard University
13
University of California--Santa Barbara
16
University of California--Davis
16
University of Wisconsin--Madison