This 17-year-old Built A Nuclear Reactor In His Backyard, And It Quickly Turned Into A Catastrophe

Mar 4, 2026 - 12:00
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This 17-year-old Built A Nuclear Reactor In His Backyard, And It Quickly Turned Into A Catastrophe

David Hahn, a 17-year-old Boy Scout from suburban Michigan, made headlines for attempting to build a nuclear reactor in his backyard. Known as the “Radioactive Boy Scout,” Hahn‘s dangerous experiment would earn him a spot in history for all the wrong reasons.

David’s obsession with science started early. By the time he was 10, he was already dabbling with chemistry in his bedroom, mixing chemicals and reading books on nuclear energy. It wasn’t long before his interests turned to the more exotic world of radioactive materials, something he thought could earn him recognition and respect. In 1991, Hahn earned his atomic energy merit badge, a coveted achievement for any Boy Scout. Little did anyone know, this success would be the start of an all-consuming quest that would push him to build his own nuclear reactor.

A Teenager’s Pursuit of Radioactive Glory

David Hahn wasn’t like other kids, his ambitions were far grander. By the age of 14, he was already experimenting with things like nitroglycerin, an incredibly dangerous substance, in the comfort of his own bedroom. His parents soon moved his scientific ventures to the basement, but even that couldn’t contain his growing obsession.

He was obsessed with one thing: building a working breeder reactor. For those unfamiliar, breeder reactors are designed to create more nuclear fuel than they consume, a highly complex and dangerous technology. With little to no formal training, Hahn went to work in secret, using what he could find around him. He gathered materials like thorium from lanterns, radium from old clocks, and tritium from gunsights; items most people wouldn’t think twice about.

According to All that’s Interesting report, he even contacted the Nuclear Regulatory Commission, posing as an adult scientist to get information on how to build his reactor. Using an alias, he managed to gather details on radioactive materials, often relying on cover stories to mask his true intentions. But even though his project was ambitious, he was still just a teenager working in his backyard shed. With coffee filters, pickle jars, and a gas mask, he began assembling what he believed would be his groundbreaking creation.

The Fallout: A Neighborhood at Risk

As Hahn’s experiment progressed, the unthinkable happened; he succeeded. Not in creating a full-fledged reactor, but in generating enough radiation to spread across several houses in his neighborhood. According to reports, his Geiger counter began picking up alarming readings, indicating that his backyard lab had become dangerously radioactive.

“The level of radiation after a few weeks was far greater than it was at the time of assembly. I know I transformed some radioactive materials. Even though there was no critical pile, I know that some of the reactions that go on in a breeder reactor went on to a minute extent,” he said, according to an article published in Harper’s Magazine.

Things took a turn when he was pulled over by police for a routine traffic stop, and officers found suspicious materials in his car. It didn’t take long for them to put two and two together, and soon federal agencies were involved. The Environmental Protection Agency (EPA) was called in to clean up the radioactive mess left in his shed, which was declared a Superfund site due to the hazardous materials present. Its experiment had put the lives of 40,000 people at risk, all for the sake of an adolescent’s misguided dream of building a nuclear reactor.

He continued to refuse medical evaluation after the cleanup. It’s unclear just how much damage his exposure to radiation caused, but one thing was certain: the lack of proper protection during his experiments likely shortened his life expectancy. Yet, despite the danger, he remained proud of what he had done, refusing to acknowledge the severe risks he had taken.

“I wanted to make a scratch in life,” quoted the same source, “I’ve still got time. I don’t believe I took more than five years off of my life.”

Having gained a certain level of notoriety for his bizarre and dangerous experiment, David Hahn became a sort of celebrity over time. Despite the attention he received, his life was marked by struggles, and he passed away in 2016 at the age of 39.

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