George Gamow. Gamow, who died in 1968, was a physicist, who published ?Thirty Years that Shook Physics?.
Swiss chemist Paul Hermann Muller discovered DDT (dichloro-diphenyl-trichloroethane) noted its effectiveness as a pesticide during World War II to control malaria and typhus among civilians and troops, a discovery that earned him a Nobel Prize in 1948.
It was first synthesized in the year 1874.
Thomas Jefferson (April 13, 1743 ? July 4, 1826) was the third President of the United States (1801-1809) and the principal author of the Declaration of Independence (1776).
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