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TIL in 1994, the then 17-year-old David Hahn made a nuclear reactor from batteries, old clocks, lanterns, uranium from Czechoslovakia and duct tape in a shed next to his mother’s house.

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M7oO8 Today I learned that in 1994, a plane was flying from Moscow to Hong Kong when the pilot's children got into the cockpit and accidentally turned off the autopilot. This resulted in a plane crash that killed all 75 people on the plane.
J1a1m TIL as a research student, Lawrence Bragg figured out how to use X-ray to study the atomic structure. His breakthrough discovery earned him the Nobel Prize in Physics at age 25.
NXMV6 TIL Air is both a gas and a fluid.
nW6x7 TIL that the university of vermont hosted ice bowling in their stadium. it had rubber balls, hockey masks, and slippery floors
AD5E4 TIL just 8% of the worlds currency is physical money, the rest is held on computers.