Julian Brown promised he could turn the world’s plastic waste into fuel. Two weeks ago, he posted a cryptic video saying he was “under attack.” He hasn’t been seen since.
The 24-year-old inventor from metro Atlanta disappeared in mid-July, just as his invention—Plastoline—was going viral for its potential to change how humanity handles plastic waste. Brown, who amassed 1.7 million Instagram followers with his DIY climate-tech videos, had spent five years perfecting a microwave pyrolysis machine that could convert discarded plastic into usable fuels like diesel, gasoline, and even jet fuel.
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Julian Brown’s Final Post: “I’m Certainly Under Attack”
On July 9, Brown shared a video that now feels like a warning. Looking straight into the camera, he said some “very, very odd stuff” was happening and that he was “certainly under attack.” He urged followers to “keep your eyes open” and ended with a defiant promise:
“I’m still working. I’m still building. Nothing is going to stop that.”
The caption was equally alarming:
“Something is happening, keep me in your prayers. SCREEN RECORD THIS. I don’t know.”
Since then, there have been no confirmed sightings. Authorities have released little information about his disappearance, and it’s unclear when he was officially reported missing.
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A Self-Taught Prodigy Who Defied the System
Unlike most climate-tech innovators, Brown wasn’t backed by Silicon Valley. He started in high school with nothing but welding certifications and an obsession with solving plastic pollution. His breakthrough caught the attention of environmental activists and the 776 Foundation, which awarded him a climate fellowship.
In interviews, Brown made it clear he rejected the traditional venture capital route, fearing his technology would be misused.
“This technology has major implications for all of humanity—only in the right hands,” he told Bold Journey earlier this year.
Plastoline’s potential—and Brown’s refusal to sell out—made him a darling of climate communities and a target of online speculation. Some lab tests suggested his recycled diesel burned cleaner than regular diesel, adding to the invention’s promise—and the stakes.
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Missing, and a Growing Storm of Theories
Two weeks without updates has fueled a digital firestorm. On forums, climate activists fear corporate sabotage. Followers reference his final words as proof that “he knew something.” Others suggest he may have gone underground voluntarily to protect himself or his work.
Authorities have not confirmed any foul play. As of now, no suspects have been named and no clear leads have been reported. The lack of transparency has only intensified public anxiety.
The Mystery at the Heart of It All
Julian Brown once said, “As long as I’m around there will be no such thing as plastic waste—only untapped energy.”
For now, he’s gone—and with him, perhaps, a technology that could have reshaped the future.
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