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TIL The magnetic north pole moves around 55 kilometres (34 miles) a year. It crossed the international date line in 2017, left the Canadian Arctic and is headed to Siberia. This presents a problem for compasses in smartphones and other electronics.

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9wwd6 TIL Charles Darwin's grandson, also named Charles Darwin, was an accomplished physicist with notable work in quantum mechanics
ADPWd TIL someone actually set up a solar powered MP3 and speaker in the middle of the Namibian desert to play play “Africa” by Toto for eternity
Weed TIL the costliest prison in the U.S., the Colorado Supermax, is $78,000 per prisoner per year. Guantánamo bay costs $2.8 million per prisoner per year.
b9M1E TIL Tongan custom dictates that one should not imitate the actions of persons one is honoring, so at Elisabeth II's coronation; the Queen of Tonga rode her carriage in the pouring rain refusing to pull the hood up as Elisabeth did.
47A6 TIL while working as maids Léa Papin and her sister Christine were found guilty of murdering their employer’s wife and daughter. Léa was given a reduced sentence of eight years due to good behaviour, and upon release moved to Nantes where she continued her livelihood as a hotel maid.