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TIL the “tooth fairy” leaves an average of $3.70 per tooth, up 23% since 2012.

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yQ9ye TIL that despite its simplicity, the "music" for 1978's Space Invaders was revolutionary for the gaming industry. It's the first game to have a continuous soundtrack where sound effects are superimposed. It also popularized musical dynamics, variability, and interaction with on-screen animations.
OG9WL TIL - The minimum age to be US president is 35, but 5 presidents (so far) were over 65 when inaugurated and only 2 were younger than 45
ld4V TIL The day after Thanksgiving is Native American Heritage Day, a day to pay tribute to Native Americans for their many contributions to the United States.
9Y8Nr TIL that Jay Leno had his first cup of coffee at 63 years old on Jerry Seinfeld's recent show "Comedians in Cars Getting Coffee". He, of course, hated it and Jerry finished the rest.
8aprK TIL At least 98 people are needed to operate an interstellar spaceship over many generations, and create a healthy human population on another world, according to astrophysicist Frédéric Marin.