Union of Concerned Scientists

Founding

The Union of Concerned Scientists traces its origin to December 1968, when Kurt Gottfried, then a visiting Cornell physicist at MIT, was approached by graduate students alarmed at how deeply military priorities — chiefly the Vietnam War and the proposed anti-ballistic missile system — had come to shape American scientific research. Gottfried, working with MIT physics faculty Herman Feshbach and Francis Low, turned that unease into the "Faculty Statement," which drew signatures from a large share of MIT's science faculty and students.

That statement culminated in a research strike and teach-in held March 3–4, 1969, featuring speakers including Noam Chomsky and Howard Zinn, and paralleled at roughly thirty other U.S. universities. Gottfried's follow-up document, "Beyond March 4," became UCS's founding charter, calling on scientists to "initiate a critical and continuing examination of governmental policy in areas where science and technology are of actual or potential significance" and to redirect research "away from the present emphasis on military technology toward the solution of pressing environmental and social problems." Nobel laureate physicist Henry Kendall became the organization's most consequential early champion, personally funding its first years of operation and chairing its board from 1973 until his death in 1999.

Only the scientific community can provide a comprehensive and searching evaluation of the capabilities and implications of advanced military technologies.— "Beyond March 4," UCS founding statement, 1969

Growth and Major Campaigns

Under Kendall, UCS built its reputation first on nuclear reactor safety, participating in Atomic Energy Commission hearings in the early 1970s and later analyzing the Three Mile Island accident. The organization broadened steadily from there: arms control and the nuclear arms race through the 1980s, culminating in Kendall presiding over the 1992 "World Scientists' Warning to Humanity," signed by 1,700 scientists including a majority of the era's Nobel laureates in the sciences.

By the mid-1990s and 2000s, climate change had become a central UCS focus, including a 1997 petition delivered to negotiators at the Kyoto Protocol talks signed by more than 1,500 senior scientists. In 2004, amid disputes over the George W. Bush administration's handling of scientific advice, UCS published "Scientific Integrity in Policymaking," followed in 2006 by a statement on restoring scientific integrity to federal policymaking signed by more than 10,600 scientists — work that eventually grew into UCS's standing Center for Science and Democracy.

Structure and Scope Today

UCS operates as a combined research and advocacy organization, employing scientists, economists, and engineers who conduct original analysis and combine it with public campaigning, coalition organizing, and legislative advocacy — a model distinct from purely academic bodies like the National Academy of Sciences. Its program areas today center on climate and energy policy, nuclear weapons and global security, food and agriculture, and scientific integrity in government. The organization is funded overwhelmingly by individual donors, with the balance from foundation grants, and has historically drawn scrutiny from industry-aligned groups over its role in climate and energy policy debates.

Dr. Gretchen Goldman, an environmental scientist and former UCS Center for Science and Democracy staffer, became UCS president in February 2025. Dr. Kim Waddell chairs the UCS Board of Directors, succeeding Dr. Anne Kapuscinski.

Current Focus: 2025 and the Second Trump Administration

UCS has positioned itself as a leading voice tracking the second Trump administration's effects on federal science, running an ongoing blog series, "Scientists Respond to the Trump Administration," in which UCS staff and outside experts assess policy changes as they happen. This work sits squarely alongside the broader wave of 2025 federal data and research disruptions — including removals at the CDC, EPA, and Department of Education — that has drawn in a range of watchdog and data-advocacy organizations working adjacent, but not identical, territory to UCS's traditional scientific-integrity mandate.

The organization's current public materials also emphasize the intersection of climate change and inequality, including a recent report on the compounding effects of the U.S. housing crisis and climate-driven extreme heat, alongside its long-running nuclear security and food-systems programs.