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TIL that the water around F50 catamaran's hydrofoil reaches 100°C while sailing at high speed, meaning it is boiling. This is because the blade is slicing through the water and causes a reduction of water pressure which forms a pocket of air that dramatically affects its hydrodynamic efficiency.

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QJp1a TIL about the Native American town of Saukenuk, which had as many as 5000 residents in 1826. It was a multi-ethnic settlement, and featured a central courtyard, straight and well-kept streets, hundreds of large wigwams, a very large temple/council house, and was surrounded by vast farmland.
QJ67L TIL that the "Candy bar protest", also known as "the 5 cent chocolate war", "the 5 cent war", and "the chocolate candy bar strike", was a short-lived 1947 protest by Canadian children over the increase in price of chocolate bars from five to eight cents.
xVlP0 TIL that the detonation of a suicide vest will often peel the face off the bomber and launch it, intact, away from the blast. This can be very helpful in identifying the bomber.
e0WPE TIL Tom Hanks is related to Abraham Lincoln. Tom Hanks is a third cousin, four generations removed, of former President Abraham Lincoln. Their common ancestor is John Hanks (1680 - 1740), who was the great-great-grandfather of Lincoln and the six-time great-grandfather of Tom Hanks.
6YVm TIL Weird Al turned down $5 million, in the late 80s, to endorse a beer company. He thought it was ethically wrong because, “a lot of his fans were young and impressionable.”