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Sears, Paul Bigelow (17 December 1891–30 April 1990), botanist, ecologist, and conservationist, was born in Bucyrus, Ohio, the son of Rufus Victor Sears, an attorney, and Sallie Jane Harris. He earned a B.S. (1913) in zoology and a B.A. (1914) in economics from Ohio Wesleyan University; an M.A. (1915) in botany from the University of Nebraska; and a Ph.D. (1922) in botany from the University of Chicago. His doctoral dissertation, “Variations in Cytology and Gross Morphology of ...