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[TIL] that there is an Herbicide that will turn Male Frogs into Female Frogs

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LrD9 TIL of John Snow who first proposed that cholera outbreaks were happening because people drank water contaminated with faeces. His claims were rejected for decades because the were “too disgusting” for the public to contemplate.
XE4LR TIL of Steller's Sea Cow, a recently extinct giant manatee that weighed between 4,000-11,000 kg
laO5 TIL Thomas Midgley who invented Ethyl, the lead-based additive to gasoline, also invented chlorofluorocarbons, which just about destroyed the ozone layer. He got polio, invented a wire-and-pulley system to get himself out of bed, and then ended up being strangled by it.
Y7EP7 TIL Today I learned that soft bristled toothbrushes can be more abrasive to enamel than hard-bristled ones.
QJDPa TIL: The Offpsring's Lead Singer Is A Legit Doctor Searching For A HIV Cure