11. Gordon holds a doctoral degree in economics from the University of Chicago and has been a longtime exponent of deregulation and free-market competition.
12. Geiger, who has an MBA, also has two other master's degrees and doctoral degrees in education.
13. Hagelin, 46, was born in Pittsburgh, graduated from Dartmouth College and earned master's and doctoral degrees from Harvard.
14. Graduating from Brooklyn College in 1948, he got his master's and doctoral degrees from Harvard, where he later held the Abbott Lawrence Lowell humanities professorship.
15. Gray said the decline in master's and doctoral degrees earned by black men could have serious implications for future progress.
16. He earned a bachelor's degree from Iowa State University and a doctoral degree from Johns Hopkins University.
17. He earned a doctoral degree in finance and taught at Arizona State University.
18. He earned his bachelor's, master's and doctoral degrees at Caltech.
19. He earned a bachelor's degree in agricultural sciences in 1975 and received his doctoral degree in entomology 14 years later.
20. He earned master's and doctoral degrees at Columbia University and joined Fermi on the Manhattan Project that produced the first atom bomb.