At 8:15 AM on August 6, 1945, a 9,000-pound atomic bomb detonated 1,900 feet above Hiroshima, instantly killing 70,000 people. Three days later, a second bomb exploded over Nagasaki, killing another 40,000.

The sheer scale of destruction—that humans could annihilate each other by means as violent as a nuclear blast—ensured that Hiroshima and Nagasaki would become the defining images of nuclear weapons in the American imagination. According to a 2025 Pew Research survey, 83% of Americans reported knowing at least something about the use of nuclear weapons in Japan. However, increasingly large numbers of younger Americans don’t know enough about nuclear weapons today to give an opinion on their role in national security.

What is often remembered as the only detonation of nuclear weapons in history remains the sole use of nuclear weapons in warfare. While Americans looked overseas at the devastation in Japan, fewer recognized that nuclear weapons were also transforming the American environment at home.

For decades after World War II, nuclear weapons reshaped landscapes and communities across the United States. Between 1945 and 1992, the United States conducted 1,030 nuclear tests, while producing tens of thousands of warheads during the Cold War. At its height, the US nuclear stockpile comprised 31,255 warheads, with the last fully functional nuclear weapon being produced in 1989. The environmental and human consequences of this effort extended far beyond test sites and production facilities. Yet, the US government kept the public in the dark, leaving a generation born in the 21st century to bear the consequences of its obfuscated proliferation campaign.

The Nuclear Transformation of Marginalized America

Consider that the plutonium used in the first nuclear test in New Mexico and in the Nagasaki bomb was produced at the Hanford Site in Washington State. Between 1945 and 1970, Hanford’s reactors discharged roughly 444 billion gallons of radioactive wastewater into the Columbia River basin, a watershed that today supports over 8 million residents.

Other sites tell similar stories. In South Carolina and Georgia, rural communities were displaced to make way for the Savannah River Site nuclear weapons facility, where millions of gallons of radioactive waste were stored in underground tanks.

Make no mistake, the United States federal government was calculated in its targeting of marginalized communities to isolate radioactive material from the general population. These facilities were often located in rural or economically disadvantaged areas, where political resistance was limited and land was cheaper.

Nuclear weapons represent one of the most profound environmental risks humanity has ever created.

Currently the only permanent waste site for nuclear material in the United States, the Waste Isolation Pilot Plant (WIPP) in Carlsbad, New Mexico, collects plutonium-contaminated waste to be buried over 2,000 feet underground a salt flat formation. Framed as a barren wasteland far from major population centers, WIPP is in Eddy County, New Mexico—home to a population of over 61,000 people, of which 64% identify as people of color. Many communities face contaminated water supplies and elevated rates of respiratory illness, kidney disease, and cancer: a pattern sometimes described as “radioactive colonialism.”

Despite the government’s efforts to isolate nuclear activities and waste disposal, radioactive contamination did not respect geographic boundaries. Research released in 2023 found that nuclear tests conducted between 1945 and 1962 distributed radioactive fallout across 46 of the lower 48 contiguous states in the United States, as well as parts of Canada and Mexico. As a result of nuclear tests conducted by both the United States and other nuclear-armed powers, radioactive isotopes released into the atmosphere spread throughout the world in communities far from test sites. By the 1960s, “there was no place on Earth where the signature of atmospheric nuclear testing could not be found in soil, water, and even polar........

© Common Dreams