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TIL while a Cat’s purring mostly remains a mystery; researchers have observed that the tonal frequency of their inhale/exhale patterns are unchanged, & have been observed to be a cat’s attempt to heal itself or another bonded creature

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1ar4W TIL about the Phoebus cartel, which in 1925 met in Geneva to curb the longevity of incandescent light bulbs. This is a strategy called "planned obsolescence" to generate repeated sales and maximize profit.
D19XY TIL Despite famously missing 97 out of 253 episodes (38%), classic "Doctor Who" is actually very well preserved compared to its contemporaries. "Dixon of Dock Green" is for example missing 400 out of its 432 episodes. (92.6%).
MgyB TIL: Many statues in NYC are of the same woman who was the first nude woman in film and spent the last 40+ years of her life in an asylum
b6Mn4 TIL Until the middle of the 20th century, cats tasked with rodent control aboard ships were issued passports, uniquely signed with the imprint of their own paws.
awZRM TIL that koala bears survive off of eucalyptus by eating their mom’s feces first