 He moved to the US in 1949, and worked at the University of Illinois at Urbana–Champaign, where he was a professor of electrical engineering from 1951–1975.He also was professor of biophysics (1962–1975) and Director of the Biological Computer Laboratory (1958–1975).Additionally, in 1956–57 and 1963–64 he was a Guggenheim Fellow and also President of the Wenner-Gren-Foundation for anthropological research from 1963–1965.