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TIL Tom Cruise sent letters and gifts to the boy who originally played the little boy in “Jerry Maguire” but was replaced by Jonathan Lipnicki, because he “just didn’t want that first actor to go to the movies, look at the screen and think he’d failed. I wanted him to love movies his entire life.”

80LK TIL there are exploding lakes. Lake Nyos in Cambodia exploded in 1986 after being saturated with carbon dioxide from the volcanic vent below it. The resulting CO2 cloud suffocated 1700 people.
Y7GXG TIL a quine is a computer program that takes no input and produces a copy of its own source code as its only output.
4Vwb TIL that judges in Britain are ordered to treat female criminals less harshly than male criminals
KOrkw In 1965, a Japanese company called Yamasa Clock created a personal-fitness pedometer called the Manpo-kei, which means “10,000 steps meter.” The Japanese character for 10,000 looks almost like a person walking or running, which is likely how the gadget-maker landed on the name—and the number. It’s also an easy goal to remember, especially when accompanied by a sketch of a person who’s literally walking. But that benchmark wasn’t based on any scientific evidence. There's no magic number of steps that can ensure your heart health.
g8XW TIL the only person besides Harrison Ford to appear in all three original Indiana Jones movies was an Englishman named Pat Roach. He also died twice in Raiders of the Lost Ark.