Jane Goodall

English primatologist

Paul R. Ehrlich

American biologist

Jared Diamond

American geographer

E. O. Wilson

American biologist

George Schaller

American-German biologist

Maurice Strong

Canadian businessman

Paul J. Crutzen

Dutch meteorologist

F. Sherwood Rowland

American professor

Peter H. Raven

American botanist

C. Everett Koop

Former Surgeon General of the United States

Ed Wilson Musician

Brazilian singer

Wallace Smith Broecker

American geochemist

Clair Cameron Patterson

Veerabhadran Ramanathan

Scientist

Claude Lorius

Jerrold Meinwald

American chemist

Charles Sutherland Elton

Ecologist

Abel Wolman

Werner Stumm

Swiss chemist

Koop

Electronic duo

Hans Oeschger

Researcher

Edward Wilson

Physician

Edward'O

Astrologer

Edwin Wilson

Musician

Pete Raven

Musical artist

Edward Osborne

Merchant

John Holdren

American scientist

Te-Tzu Chang

Scientist

Thomas Lovejoy

American ecologist

Willi Dansgaard

Partha Dasgupta

British economist

Diana Wall

Environmental scientist

Pavan Sukhdev

Indian economist

Gretchen Daily

Professor

Birutė Galdikas

Anthropologist

Robert M. White

American meteorologist