Muller, << MYOO luhr, >> Paul Hermann (1899-1965), a Swiss chemist, won the 1948 Nobel Prize for physiology or medicine for discovering the insect-killing properties of DDT (dichloro-diphenyl-trichloroethane). His last name is also spelled Mueller. DDT first was produced in Austria in 1873, but Muller discovered DDT’s value as an insect killer in 1939. DDT was used during World War II (1939-1945) to kill body lice that carried typhus. Muller was born in Olten, Switzerland. See also DDT .
