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TIL for centuries before refrigeration, Russians dropped live frogs into their milk to keep it from spoiling. Secretions from their skin inhibited the growth of bacteria.

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L84m TIL that JFK awarded Canadian immigrant Frances Oldham Kelsey America’s highest federal civilian service award for preventing a major tragedy of birth deformities from thalidomide
QJX0p TIL- On 18th April 1930 the BBC's news announcer reported: "There is no news" and played piano music for the rest of the programme.
wLnL1 TIL Narcissistic personality disorder and bipolar disorders share many traits in common, such as: setting high, unattainable, goals; and being very impulsive. This makes diagnosis difficult, since what looks like one of the disorders in a person might actually be the other.
Brkwr TIL In 2016, the USFDA banned anti-bacterial soaps because they are not better, cleaner or safer than regular soap.
LQvrP TIL that Desmostylia, extinct ancestors of manatees, had a unique way of feeding: they vacuumed seagrass from the seafloor by uprooting it entirely with their mouths. This distinctive feeding method likely contributed to their extinction as they competed with other marine herbivores.