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TIL of the last Kaua'i 'ō'ō bird, who was recorded singing a mating call to a female that would never come. It died in 1987.

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Ypkrr TIL that Kirk Kerkorian, the richest person in Los Angeles, has dispensed more than $200 million and a school, and he has never allowed anything to be named in his honor
A7nw TIL that the solution of the Monty Hall problem (that asks to pick one of three doors to win a car, the picked door remains closed and the third one opens, then asks if you want to switch or not) is so counterintuitive that mathematician Paul Erdos was unconvinced until he saw a simulation of it
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6Y0Y TIL it costs $88,000 per year to keep a minor incarcerated but only $12,500 per year to educate them in public schools.
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