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TIL Karl Marx has a living great-great-grandson named Joseph Marx who does parkour for money outside of a McDonalds in Kingston, UK

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mxAJo TIL, during Korean War, U.S Navy pilot Royce Williams shot down 4 swept-wing Soviet MiG-15s in a single mission on November 18, 1952, while flying a straight-wing F9F Panther. It is considered a unique feat since the MiGs have better high-altitude performance than the F9F, and was faster by 100 MPH.
D1GOJ TIL the Duke of Kent has been presenting Wimbledon trophies since 1968.
KnNQ TIL that the dating system “BP” (before present/before physics) starts in 1950, because nuclear weapons testing changed the carbon isotopes in the atmosphere, making dating after that time unreliable.
GY7Q5 TIL soil is not a renewable resource. Soil is 1 of 2 main components of Earth — the other being oceans — where life is active. Human life depends on healthy soil, just like it depends on clean air and clean water, but losses of soil cannot be regained within a lifetime.
eLnk TIL Musket shot (bullets) were made by dropping molten lead from a tall tower, allowing it to cool into a sphere on its way down.