René Jules Dubos (February 20, 1901 – February 20, 1982) was a French-American microbiologist, experimental pathologist, environmentalist, humanist, and winner of the Pulitzer Prize for General Non-Fiction for his book So Human An Animal. He is credited for having made famous the environmental maxim: "Think globally, act locally." Aside from a period from 1942 to 1944 when he was George Fabyan Professor of Comparative Pathology and professor of tropical medicine at Harvard Medical School and Harvard School of Public Health, his scientific career was spent entirely at The Rockefeller Institute for Medical Research, later renamed The Rockefeller University. Early life and education Dubos was born in Saint-Brice-sous-Forêt, France, on February 20, 1901, and grew up in Hénonville, another small Île-de-France farming village north of Paris. His parents operated butcher shops in each of these villages. He attended high school and the National Institute of Agronomy in Paris, and he received a Ph.D. from Rutgers University in 1927. Career Dubos began his career in microbiology in 1927, when he joined Oswald Avery's laboratory at The Rockefeller Institute for Medical Research. Avery was looking for a microbe that could break down the polysaccharide capsule of a deadly strain of bacterial pneumonia in the same way that soil bacteria digested decaying organic matter in the woods. Dubos identified a bacterium that secreted an enzyme that broke down polysaccharide. In 1939, with the help of Rockefeller Institute biochemist Rollin Hotchkiss, Dubos isolated the antibacterial agents tyrothricin and gramicidin from the bacterium Bacillus brevis that killed or inhibited Gram-positive bacteria and tested their bacterial, chemical, and clinical properties. These antibiotics remain in limited use today. In 1942, before antibiotics were in general use, Dubos warned that bacterial resistance should be expected. Dubos devoted most of his professional life to the empirical study of microbial diseases and to the analysis of the environmental and social factors that affect the welfare of humans. His pioneering research in isolating antibacterial substances from certain soil microorganisms led to the discovery of major antibiotics. He performed groundbreaking research and wrote extensively on a number of subjects, including tuberculosis, pneumonia, and the mechanisms of acquired immunity, natural susceptibility, and resistance to infection. In 1948, Dubos shared the Albert Lasker Basic Medical Research Award with Selman Waksman for "their achievement in studies of the antibiotic properties of soil bacteria". He was elected to the American Philosophical Society in 1954 and the American