The Fallout We Never Escaped

Nuclear weapons are among the most destructive devices ever created, using either nuclear fusion, fission, or a combination of both to create blasts on a scale no typical weapons can match. Their immediate effects, such as blasts, radiation, and firestorms, can devastate entire cities in seconds. But the damage doesn’t stop there. Although the long-term effects appear to be almost trivial compared to their immediate effects, they are not irrelevant. Radiation poisoning, cancer, and environmental contamination can persist over decades, making nuclear weapons dangerous long after the explosion itself.

It is increasingly clear that nuclear weapons have severe long-term effects. Consequences of tests from decades ago continue to surface in our DNA and environment, even among people who were uninvolved with testing. A report by The Norwegian People’s Aid (NPA), a humanitarian organization, brought together 20 independent experts from communities impacted by radiation to document the legacy of nuclear testing. These researchers confirmed that every person alive today carries radioactive isotopes from atmospheric nuclear testing in their bones. Nuclear blasts send strontium-90 high into the atmosphere, which then spreads across the entire globe. Though very small amounts of strontium-90 aren’t relatively dangerous, they still could have serious consequences. In the human body, this isotope acts like calcium and is readily absorbed throughout the body, and may cause cancer in bones. 

Strontium-90 isn’t the only thing that people have absorbed from nuclear waste. From 1945 to 1980, almost 500 atmospheric tests and 1500 total nuclear tests were conducted. According to the International Physicians for the Prevention of Nuclear War, “roughly 2.4 million people will eventually die as a result of the atmospheric nuclear tests conducted between 1945 and 1980, which were equal in force to 29,000 Hiroshima bombs.” This figure is not just a historical event. Deaths due to nuclear weapons tests continue to accumulate today. 

One of the most disturbing findings of the Cold War era was not from a blast sight, but from a dentist’s office. A study done by researchers Joseph Mangano, Kelli S. Gaus, Timothy A. Mousseau, and Michael Ketterer found that strontium-90, a radioactive isotope produced by nuclear fission, was found in baby teeth collected from children across the United States during the Cold War; children who had never lived anywhere near a test site. 

These findings confirmed something dangerous: radioactive fallout from atmospheric nuclear testing had made its way into food, bones, and human teeth worldwide. No distance was considered “safe” from radiation; the nuclear age had changed the chemistry of an entire generation.

Strontium-90 travels in a discrete path. When a nuclear weapon detonates, explosions can vaporize radioactive particles and send them into the stratosphere, where winds carry them thousands of miles. They then descend down as precipitation, raining down across continents. From here, strontium-90 can be absorbed into soil, taken up by crops, and later by livestock, ultimately reaching humans through food or even water. 

1947 marked the beginning of the Cold War, a period of rivalry between the U.S. and the Soviet Union. This date also marked a series of nuclear tests that forever changed the world. Not to be ignored is the transportation and storage of radioactive waste, which have generated catastrophes of their own. In the 1956 Kyshtyn incident in the Soviet Union, the failure of a cooling system at a nuclear weapons waste facility triggered an explosion that sent 20 million curies of radioactive material into the sky, where wind scattered it across 20,000 square kilometers. This explosion was roughly 400 times the radiation released by the Hiroshima bomb, and occurred in an area home to 270,000 people. Many residents suffered radiation sickness, forced evacuation, and elevated rates of cancer or birth defects. Most disturbingly enough, this event was entirely classified by the USSR, so many residents didn’t know why they were getting sick. It wasn’t until the 1980s that it was acknowledged publicly.

 On the American side, the production and disposal of nuclear weapons caused destruction. The production of plutonium for weapons left behind over 100 million gallons of hazardous liquid waste containing both radioactive material and toxic chemicals. This contaminated clothes, glassware, tools, equipment, soils, and sludges; waste that would continue to exist for decades.

Fallout from the U.S. atmospheric nuclear tests in New Mexico and Nevada had reached all 48 states. Traces from the world’s first nuclear test, detonated on July 16, 1945, in the Jornada del Muerto desert of New Mexico, were detected as far as Crawford Lake in Canada. This is a finding that has since become a marker for the beginnings of an Anthropocene, a period where human activity is a dominant influence on the environment.

Nuclear fallout doesn’t end with one generation. Geneticist Yuri Dubrova and colleagues found strong evidence of DNA mutations across three generations of families living near nuclear testing sites in Kazakhstan. The damage was not confined to those who experienced the tests but was passed down. Children, and their children, carried the consequences of governmental decisions made before they were even born. 

Furthermore, nuclear weapons create long-term human and environmental damage, and Matthew Bolton, a professor at Pace University, has argued that the government has systematically failed to take responsibility and adequately help those who were impacted by such conditions. Bolton supports the International Campaign to Abolish Nuclear Weapons, arguing that no national security justification can ever account for the harm that nuclear programs produce.

The dangers of nuclear waste extend beyond what people consume. It highlights the disparity and inequality that we face in society. The term “downwinders” refers to civilians living near Nevada testing sites. The U.S. government took decades to acknowledge the harm that was done to them, and the compensation that had been eventually offered through the Radiation Exposure Compensation Act in 1990 was widely criticized as too little and too slow. The act expired in 2024 with many claims still left unresolved, and was only revived a year later, in July 2025, after significant pressure from affected communities. On May 7, Downwinder communities and organizations wrote to the House of Representatives, “Our communities have been suffering under this injustice for many decades, and it cannot continue. Congress must improve RECA to include many communities that have been excluded and abandoned by our government.”

Furthermore, Kazakhstan’s Semipalatinsk test site communities were left waiting years for Russia’s acknowledgment of the harm during the Cold War testing era. The government had concealed the risks from its own citizens. Even today, thousands of people in northeastern Kazakhstan continue to suffer the consequences from 40 years of nuclear testing, with many saying they have not received adequate compensation. A study in 1989 recognized that the health of the local population was worse than anywhere else in the Soviet Union.

The term “environmental racism” was coined due to the consistent pattern of where test locations were chosen. It can be defined as the disproportionate exposure of marginalized groups to environmental hazards. Communities that were harmed are often indigenous, of color, poor, or rural, and were never included in decisions regarding nuclear testing or waste. The Mescalero Apache Nation, where the first nuclear test occurred, was a Trinity downwinder community that was historically indigenous. Commercial reactors and waste storage facilities are also disproportionately located near low-income communities or communities of color. For example, the Savannah River nuclear facility in South Carolina, where there have been cases of radioactive leaks, is located in a predominantly African American community.

The gap between the scale of the harm and government action to prevent it is stark. Often, affected communities, such as those in Kazakhstan or Nevada, spend decades seeking recognition, compensation, or medical care for the harm they received. 

This is not something that is history. Nuclear weapons tests from the past have changed the lives of families even today. The true casualty of nuclear weapons testing cannot be tied down to a single generation.