Gilbert N.
Lewis

UC Berkeley


Niels
Bohr

Copenhagen University (Physics Tree)






Irving W.
Bailey

Harvard (Evolution Tree)


Elso S.
Barghoorn

Harvard (Evolution Tree)


J. William
Schopf

UCLA (Geotree)


Henry Caselli
Richards

University of Queensland (Geotree)


Gertrude Lilian
Elles

Cambridge (Geotree)


Dorothy
Hill

University of Queensland (Geotree)





Matthew E.
Rhodes

Penn State
(Options)

Matthew RhodesX