North Korea Designed a Nuke. So Did This Truck Driver

John Coster-Mullen has reverse-engineered America’s first nuclear weapons and has self-published a book on his findings. Meredith Rizzo/NPR hide caption toggle caption Meredith Rizzo/NPR John Coster-Mullen has reverse-engineered America’s first nuclear weapons and has self-published a book on his findings. Meredith Rizzo/NPR This year, deep inside a mountain, North Korea detonated a giant nuclear bomb. The weapon was powerful; at least 10 times more destructive than the bomb the U.S. dropped on Hiroshima at the end of World War II. The North claimed it was an advanced, thermonuclear design. The…

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