› added 5 years ago

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TIL that you're not supposed to rinse your mouth (with water or mouthwash) after brushing your teeth. You're supposed to just spit out any excess toothpaste to enable the fluoride left behind on your teeth to do its thing.

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via reddit.com

9Y8RX TIL you rarely hear Happy Birthday on TV because the song was copyrighted from 1935 to 2014. In 2014 Time Warner paid 14 million to release the song to the public domain rather than face a lawsuit over their aggressive ownership of it which was netting them 2 million a year.
woO6 TIL a mentally imbalanced man named Joshua Norton in the mid-1800’s declared himself “Emperor of the United States.” The people of his town were so amused that they respected his authority, doing things like actually taking the fake money that the “Emporer” issued in his own name.
KYlX6 TIL that the Toilet waste is never intentionally jettisoned from an aircraft. All waste is collected in tanks and emptied into toilet waste vehicles. Blue ice is caused by accidental leakage from the waste tank.
wLa47 TIL On April 23, 1635, the first public school in what would become the United States was established in Boston, Massachusetts. Known as the Boston Latin School, this boys-only public secondary school was led by schoolmaster Philemon Pormont, a Puritan settler.
j6Gjv TIL during Operation Desert Storm planning, it is found out that many squadron have same callsigns. There's 5 Blades, 6 Broncos, 10 Claws, Demons, Dogs, Dragons, Ghosts, 13 Cobras, 9 Cowboys, Razors, 7 Daggers, Huskies, 14 Eagles, 11 Falcons, with the most is Raymonds, being 26.