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TIL some male butterflies mark girl butterflies with a repulsive stench while doing sex in order to deter competing male rivals

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WknGN TIL by dry weight, the human brain is nearly 60% fat. And of that 10-20% is DHA (omega-3).
16B4r TIL There were roughly 65 new cases of lung cancer for every 100,000 people in 1992. By 2019, that number had dropped to about 42
J4Wj TIL: That in 1962, a programmer omitted a single hyphen in the code for the Mariner I rocket, causing it to explode shortly after take off. This typo cost NASA the equivalent of $630 million dollars today.
9YJy7 TIL that the American Rock Band ‘The Postal Service’ was sent a cease and desist letter by the United States Postal Service for trademark infringement of their name. After negotiations, the USPS allowed the band to use their name in exchange for playing a free show at their national conference.
WkKVX TIL the term "Genericide"- That if a Trademark begins being used as a generic term for other items of it's kind to the point where it becomes the more common term for the item than the items generic name, the Trademark can be removed. Escalators used to be a trademark but this happened with them.