Death of Linus Pauling (American scientist, Nobel laureate), August 19, 1994. Linus Pauling was one of the most prominent scientists of the twentieth century, known for his groundbreaking work in chemistry and his advocacy for peace. Born in 1901, Pauling received two Nobel Prizes during his lifetime: the Nobel Prize in Chemistry in 1954 and the Nobel Peace Prize in 1962. He remains the only person to have received two unshared Nobel Prizes. Pauling's research on chemical bonds and molecular structure had a profound impact on the field of chemistry. His book, "The Nature of the Chemical Bond," is considered a foundational text in the discipline. Beyond his scientific achievements, Pauling became a leading peace activist in the 1950s and 1960s, playing a significant role in campaigns against nuclear weapons. His efforts to ban nuclear testing drew international attention and contributed to global disarmament movements. Pauling died at the age of 93 in California. Following his death, universities and scientific institutions around the world commemorated his legacy and contributions. This event is regarded as a milestone in the history of science and peace activism in the twentieth century. The observance of this date in the Gregorian calendar of 1994 was established by scientific and cultural organizations to honor Pauling's scientific and social impact, and is typically marked by the publication of articles and memorial events.