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TIL that grandma killer whales increase the survival of the pack by letting their daughters mate while taking care of their grandoffspring

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Nlee TIL Light Bulb Manufacturers formed a Market Controlling ‘Cartel’ that disallowed 1000 Hour+ lightbulbs, and threatened legal action to any company who did.
D1g9e TIL that Jackie Chan sings the Cantonese version of “I’ll Make a Man Out of You” on the DVD for the Disney movie Mulan
bm4N TIL each older brother increases a man’s odds of having a homosexual orientation by 28–48%. This only applies for right-handed men.
neWVd TIL the theme song for Saved by the Bell was written by composer Scott Gayle against the implicit instructions of Peter Engel. Though Engel had not been able to keep the show from being named Saved by the Bell, he was determined to prevent the phrase from showing up in the theme.
xVAy1 TIL that Professor Stephen Hawking, World-renowned theoretical physicist, sang in and featured on a number of songs including Monty Python Galaxy Song released 2015.