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TIL Akira Haraguchi, who in 2006 recited 100,000 digits of pi from memory at a public event near Tokyo. It took him 16hrs 30mins.

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M7XyK TIL that, in 1960, Chicago Mayor Richard J. Daley gave Prince Akihito of Japan bluegill fish to be bred in Japan for food. They escaped captivity and are now an invasive species in Japan.
wDjY TIL Phillip II of Macedon said to Sparta: “You are advised to submit without further delay, for if I bring my army into your land, I will destroy your farms, slay your people, and raze your city.” The Spartans replied: “If”. Subsequently, both Philip and Alexander would avoid Sparta entirely.
loeP1 TIL that a straight-line tornado is called a derecho.
16AXW TIL The first oranges weren’t orange. The original oranges from Southeast Asia were a tangerine-pomelo hybrid, and they were actually green. In fact, oranges in warmer regions, such as Vietnam and Thailand, still stay green through maturity.
e0kbn TIL these hardcore Javanese bird's nest gatherers have to risk their lives descending a cliff face hanging from ropes, waiting on an overhang 10 m above sea level for a wave sweeping them into a cave where they gather the nests in total darkness. Bad timing can result in loss of their lives.