Most Nobel Prizes Won by One Person — Linus Pauling

Most Nobel Prizes Won by One Person — Linus Pauling
Born	February 28, 1901
Birthplace	Portland, Oregon, U.S.
Occupation	Chemist, biochemist, peace activist
Known for	Winning two Nobel Prizes (Chemistry, 1954; Peace, 1962); pioneering work in molecular biology and nuclear disarmament

Linus Carl Pauling was an American chemist, biochemist, and peace activist who holds the distinction of being the only person to have won two Nobel Prizes in different fields. His groundbreaking research on the nature of chemical bonds earned him the 1954 Nobel Prize in Chemistry, while his tireless advocacy for nuclear disarmament and humanitarian causes secured him the 1962 Nobel Peace Prize. Pauling’s scientific contributions revolutionized the understanding of molecular structures, and his activism during the Cold War made him a prominent figure in global peace movements. His legacy endures not only in the annals of science but also in the ongoing dialogue about the ethical responsibilities of scientists and the power of peaceful resistance. As among the most influential intellectuals of the 20th century, Pauling’s work continues to shape disciplines ranging from chemistry to public policy.

Early Life

Linus Pauling was born on February 28, 1901, in Portland, Oregon, to Herman Pauling, a pharmacist, and Lucy (Henderson) Pauling, a schoolteacher. His father’s profession exposed him early to the world of chemistry, while his mother’s emphasis on education fostered a lifelong curiosity. Pauling was the eldest of three children, with a younger brother, Peter, and a sister, Linda. His early education took place at Portland’s Lincoln High School, where he excelled in mathematics and science. Demonstrating an aptitude for chemistry, he enrolled at Oregon Agricultural College (now Oregon State University) in 1917, where he studied chemical engineering. After two years, he transferred to the California Institute of Technology (Caltech), where he earned his bachelor’s degree in 1922 and his Ph.D. in chemistry in 1925, under the mentorship of Arnold Sommerfeld and Robert A. Millikan. His doctoral research focused on the structure of molecules, a topic that would define his career.

Career

Chemistry Research and the Nature of the Chemical Bond

Pauling’s most enduring scientific contributions emerged during the 1930s and 1940s, when he developed a revolutionary framework for understanding chemical bonding. His work on the nature of the chemical bond, particularly the concept of resonance and the hybridization of atomic orbitals, provided a theoretical foundation for molecular structure. These ideas were synthesized in his seminal 1939 book, *The Nature of the Chemical Bond*, which became a cornerstone of modern chemistry. The book introduced the concept of electronegativity, a measure of an atom’s ability to attract electrons in a chemical bond, which remains a fundamental tool in chemical analysis. Pauling’s insights into molecular geometry and bonding mechanisms earned him widespread acclaim and laid the groundwork for advancements in biochemistry, materials science, and pharmaceutical research.

Pauling’s research extended beyond theoretical chemistry. During World War II, he contributed to the Manhattan Project, working on the separation of uranium isotopes, a critical step in the development of the atomic bomb. However, his involvement in the project was brief, and he later expressed moral reservations about the use of nuclear weapons. His scientific work during this period, though controversial, underscored his commitment to applying chemistry to solve complex problems.

Peace Activism and the Nobel Peace Prize

Pauling’s transition from chemistry to peace activism began in the early 1950s, as he became increasingly concerned about the global threat of nuclear weapons. His advocacy was rooted in a belief that scientists had a moral obligation to address the societal implications of their discoveries. In 1955, he co-authored the *Hiroshima Appeal*, a document signed by 11,000 scientists urging the abolition of nuclear weapons. This effort culminated in the 1957 *Scientists’ Statement on Disarmament*, which called for the elimination of nuclear weapons and the establishment of international control over scientific research. Pauling’s activism gained international attention, particularly after he publicly criticized the U.S. government’s nuclear testing program and the use of atomic bombs in Japan.

In 1962, Pauling was awarded the Nobel Peace Prize for his efforts to promote nuclear disarmament and his role in the *Hiroshima Appeal*. The Nobel Committee cited his “campaign against nuclear weapons and his efforts to promote international peace and cooperation.” His acceptance speech emphasized the need for global dialogue and the importance of scientific collaboration in addressing humanity’s challenges. Despite facing political opposition, including a temporary ban on his entry into the United States by the Eisenhower administration, Pauling remained a vocal advocate for peace and disarmament.

Later Work and Controversies

In the 1960s and 1970s, Pauling expanded his research into molecular biology and medicine. He proposed that high doses of vitamin C could prevent and treat diseases such as the common cold and cancer. While his claims were met with skepticism by the scientific community, Pauling continued to promote vitamin C therapy, publishing books such as *Vitamin C and the Common Cold* (1970) and *Cancer and Vitamin C* (1979). His advocacy for vitamin C, though controversial, sparked debates about the role of nutrition in health and the limitations of conventional medicine. Critics, including the National Cancer Institute, noted that clinical trials did not support his assertions, but Pauling’s work remained influential in alternative medicine circles.

Pauling’s later years were marked by a continued commitment to social justice. He supported the civil rights movement and opposed the Vietnam War, aligning himself with progressive causes. His activism, however, sometimes placed him at odds with mainstream scientific institutions, which viewed his vitamin C claims as pseudoscientific. Despite these controversies, Pauling’s contributions to science and peace remained widely recognized.

Personal Life

Linus Pauling married Ava Helen Pauling in 1922, and the couple had two children: Linus Jr. and Linda. Ava Helen, a noted figure in her own right, was a passionate advocate for education and social reform. She supported her husband’s scientific work and shared his commitment to peace activism. The couple’s partnership endured for over six decades, and they remained active in public life until Pauling’s death in 1994. After Ava Helen’s death in 1981, Pauling married a colleague, Dr. Barbara McClintock, a Nobel laureate in physiology or medicine. Their marriage was brief, ending in 1983.

Pauling was known for his intellectual rigor and his ability to communicate complex scientific ideas to the public. He maintained a rigorous work ethic throughout his life, often working late into the night. His personal correspondence and writings, many of which are archived at the Linus Pauling Institute at Oregon State University, provide insight into his scientific and philosophical views.

Recognition

Linus Pauling’s achievements have been honored by numerous institutions and organizations. In addition to his two Nobel Prizes, he received the National Medal of Science in 1973, the highest scientific honor in the United States. He was also awarded the Priestley Medal by the American Chemical Society in 1968 and the Benjamin Franklin Medal in Chemistry by the Franklin Institute in 1966. His work on molecular biology earned him the Harvey Prize in 1974, and he was elected a Fellow of the Royal Society in 1965.

Pauling’s legacy is preserved through the Linus Pauling Institute, which continues his research on the role of nutrients in health. His papers, letters, and scientific manuscripts are housed at Oregon State University, where they serve as a resource for scholars and students. His contributions to science and peace have been celebrated in documentaries, books, and academic studies, ensuring his place in history as a polymath and a humanitarian.