DDT : Othmar Zeidler, Germany, 1874.
Detector, Metal : Gerhard Fisher, Germany/U.S.A., late 1920s.
Deuterium : (heavy hydrogen) Harold Urey, U.S.A., 1931.
DNA : (deoxyribonucleic acid) Friedrich Meischer, Germany, 1869; (determination of double-helical structure) F. H. Crick, England and James D. Watson, U.S.A., 1953.
Dye : William H. Perkin, England, 1856.
Dynamite : Alfred Nobel, Sweden, 1867.
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