Gilbert N.
Lewis

UC Berkeley (Chemistry Tree)


Niels
Bohr

Copenhagen University (Physics Tree)


Harold Clayton
Urey

UCSD (Physics Tree)


Alfred O.C.
Nier

UMN (Physics Tree)


Arthur J.
Dempster

Chicago (Physics Tree)


Mark G.
Inghram

Chicago (Physics Tree)


Gerald J.
Wasserburg

Caltech (Physics Tree)




Ian
Campbell

California Division of Mines and Geology




Carl A.
Winkler

McGill (Chemistry Tree)


Harold Clayton
Urey

UCSD (Physics Tree)


Samuel
Epstein

Caltech (Chemistry Tree)


Ian
Campbell

California Division of Mines and Geology










Richard P.
Nickelsen

Bucknell University






Rudy Lynn
Slingerland

Penn State (Physics Tree)


Gregory E.
Tucker

CU Boulder (Physics Tree)






Bernard
Hallet

University of Washington (Marine Ecology Tree)



Katy
Barnhart

CU Boulder
(Options)

Katy BarnhartX