For four decades his work was regularly published on Life Magazine and Scientific American.
Here are some of my favorite images.
A pair of 90-day-old cow fetuses clearly visible inside an amniotic sac, 1965.
Fetus in an artificial womb, 1965.
Sheep that survived an atom bomb test are studied for radiation poisoning, 1949.
An anesthetized monkey has its brain activity monitored, 1971.
A speck of the world’s first plutonium, 1946.
Blood circulating through a heart, 1948.
Research on cigarette smoking and lung cancer, 1953.