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TIL Some states print decks of cards featuring the names/images of victims of unsolved crimes to be used in prisons and have successfully solved cold cases.

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R5NE9 TIL The eerie "Number Stations" are shortwave radio stations that broadcast cryptic messages, often consisting of strings of numbers or coded words. These stations have been transmitting since the Cold War era and continue to baffle listeners as their purpose and intended audience remain unknown.
ZPPv TIL on Black Friday 2013, Cards Against Humanity had an ‘Anti-Sale,’ increased prices, and still had a sale’s spike and topped Amazon’s best-selling items for the day.
x6XVB TIL that NASA is still paying Space Shuttle landing fees 11 years after the program ended.
xVvB TIL that treasure worth $22 billion in gold, diamonds and jewels was found in secret vaults of an Indian temple.
7r7xP TIL the air around lightning can get up to 50,000 degrees Fahrenheit. 5x hotter than the sun’s surface