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TIL Bee Gees’ Stayin’ Alive has close to 104 BPM and was used to provide the correct number of chest compressions when doing CPR

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x6QY0 TIL that they invented wide QR codes. Dubbed "rMQR", it has the same parameters and applications as original QR code, but is more suitable for rectangular areas.
LkmV0 TIL Dubbed as one of the worse sales promotions in history, Hoover nearly went bankrupt after promising UK customers a flight to the USA and back if they spent £100 or more on their products. Hoover cancelled the promotion before many customers received their tickets and some even took legal action.
w8b1 TIL Lucille Ball, of I Love Lucy fame, also produced the Star Trek franchise
LQgBP TIL of Harvester, a 1996 video game known to be one of the most violent and disturbing video games made, with Germany even banning it. Developed in 1994, it was released two years later due to how long it took to code the game.
xAN7 TIL launching a nuclear weapon within the City of Chicago is punishable by up to 30 days’ imprisonment and a $1,000 fine [x-post from /r/Chicago]