Arie Jan Haagen-Smit, G. Evelyn Hutchinson, and Maurice Strong
Arie Jan Haagen-Smit is the discoverer of the chemical nature of smog and advocate for change, the air pollution research he started as Caltech has expanded to air quality research worldwide.
G. Evelyn Hutchinson is one of this century’s preeminent ecologists, his work in theoretical ecology provided the foundation of modern ecological practice.
Maurice Strong is the founding director of the United Nations Environment Programme, he has provided skilled diplomatic leadership in the international political-environmental arena.