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TIL about Ruth Harkness, the chain-smoking American heiress who brought the first live panda out of China

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4krVR TIL that cats can have hypersomnia disorders (narcolepsy, cataplexy) just as humans do. It's harder to diagnose due to cats usual 16-20hrs/day sleep cycle, and it's as rare as in humans, but did you ever see your cat falling asleep in a middle of something?
mXBP TIL that because they die early, smokers save society roughly 32 cents for every pack they smoke. Some economists support a cigarette subsidy to save society money.
Rmg9 TIL Beatle George Harrison survived a brutal stabbing when his wife fended off an intruder with a fireplace poker and lamp. Harrison suffered a punctured lung and over forty stab wounds.
nWxvY TIL That pounds are officially weighed in kilograms
8aZDV TIL - In certain cancer cases acute secondary infection causes the immune system to destroy the cancer leaving the patient free of that cancer for life. At least one doctor named William Coley developed a therapy to recreate this scenario under controlled conditions.