Overview
Linus Carl Pauling towered over 20th-century science like the double-helix he helped uncover. From a basement laboratory in Pasadena he fused physics with chemistry, showing that molecules behave like three-dimensional puzzles whose pieces—electrons—obey quantum rules. His 1939 book The Nature of the Chemical Bond became the field’s “bible,” translating Schrödinger’s wave equations into pictures any chemist could draw. Later, the same restless intellect that decoded protein α-helices turned to the Cold War arms race, marshaling 11,000 scientists to petition against atmospheric nuclear testing—an effort that forced a Partial Test-Ban Treaty in 1963 and earned him a second Nobel.Pauling’s career illustrates how rigorous science can coexist with fierce public advocacy. He carried x-ray diffraction photos of hemoglobin in his briefcase while debating U.S. presidents on television, insisting that knowledge carries moral responsibility. His later, controversial championing of vitamin C megadoses (up to 18 g/day—300× the RDA) blurred the line between genius and heresy, yet even critics concede he kept nutrition research on the scientific agenda.
History/Background
Born in Portland, Oregon on 28 February 1901, Pauling left Oregon State College at 21 with a B.S. in chemical engineering and a head full of Gilbert N. Lewis’s electron-dot diagrams. A 1925 Guggenheim Fellowship took him to Munich, where he learned quantum mechanics from Arnold Sommerfeld and returned to Caltech in 1927 as the youngest full professor in the Institute’s history. Between 1927 and 1963 he published an average of one paper every 3.5 weeks, ranging from crystal structures of mica to the first estimate of the electronegativity scale (0.7–4.0).The peace chapter began on 6 August 1945. Hearing of Hiroshima while fixing breakfast, Pauling vowed to study politics “with the same rigor I give to hemoglobin.” He joined the Emergency Committee of Atomic Scientists (1946), refused to give House Un-American Activities Committee the names of petition organizers, and saw his passport revoked in 1952—ironically preventing him from attending the Royal Society meeting where Watson and Crick, armed with his own hydrogen-bonding insights, unveiled DNA’s structure.
