"American chemist" . . "1893-04-29Z"^^ . . . . . . "1893Z"^^ . . . . . "Urey, Harold C."@en . . . "1981Z"^^ . "Harold Clayton Urey (April 29, 1893 \u2013 January 5, 1981) was an American physical chemist whose pioneering work on isotopes earned him the Nobel Prize in Chemistry in 1934 for the discovery of deuterium. He played a significant role in the development of the atom bomb, but may be most prominent for his contribution to theories on the development of organic life from non-living matter.Born in Walkerton, Indiana, Urey studied thermodynamics under Gilbert N. Lewis at the University of California."@en . . "1981-01-05Z"^^ . "Harold Clayton Urey"@en . .