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TIL that same-sex behavior has been recorded in more than 1000 species in animal kingdom ranging from beetles to penguins.This was earlier often seen as an example of Darwin's paradox as these behaviors are non-reproductive and don't contribute to the advancement of species in the traditional sense.

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16rDX TIL calories in food are measured by exploding a dehydrated food in an oxygen filled canister surrounded by water. The explosion of the food item gives off energy that heats the surrounding water. The increase in temperature of the water is how we calculate calories.
5GKQ TIL that teenager invented a push-button socket wrench and offered the patent to Sears. Sears told him the patent was valueless and gave him $10,000, then went on to make $44 million selling the ratchets.
yPkV TIL that Ron Howard has given each of his children the middle name of where they were conceived: Bryce (Dallas), Jocelyn and Paige (Carlyle; Carlyle Hotel, NYC), and Reed (Cross; famous London street. Reed was named after the street because according to Howard, “Volvo isn’t a very good middle name.”
W71yY TIL Mark Mcgwire’s 70th home run was caught by fan Phil Ozersky. After the Cardinals offered him a signed bat, ball, and jersey for the baseball. Ozersky asked to be able to meet McGwire too in this exchange, but McGwire said no. Ozersky to keep the baseball ,which he sold for over $3million.
olOK TIL The 20-20-20 rule to reduce eyestrain. For every 20 minutes you work at a computer you should take at least a 20 second break to look at something 20 feet away.