February 28, 1901 – Chemist and peace activist Linus Pauling is born in Portland, Oregon. He is widely considered one of the greatest scientists in history, making contributions in quantum chemistry, organic and inorganic chemistry, and molecular biology. After World War II he became concerned about the destructive potential of nuclear weapons, urging against nuclear testing and against war itself. Pauling won the Nobel Prize for Chemistry in 1954 and the Nobel Peace Prize in 1961, making him the only person in history to have won two unshared Nobel Prizes. In his later years he promoted questionable alternative medical practices and vitamin therapies. Pauling was a longtime Unitarian and was named Humanist of the Year in 1961 by the American Humanist Association. He died in 1994, aged 93.
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