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TIL Argentine composer Lalo Schifrin wrote the Mission:Impossible theme for the 1960s TV series. The main rhythm is based on the Morse code for the letters M and I (--..) in a 5/4 time signature.

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Dyjj TIL that the English word cereal is derived from ‘Ceres’, the Roman goddess of harvest and agriculture.
5YJbD TIL that in the early 20th century, giving birth at hospital was more dangerous than at home. Reasons appareantly include doctors not washing hands (gentelmen have clean hands), being undertrained and overusing unnecessary (and harmful) procedures just to look cooler than midwifes.
8Dd8 TIL that the Prairie Vole (a rodent) is monogamous, while its closest relative the Montane Vole is promiscuous. The ADH receptor gene between the two species is different and cause different behavior. The same gene was injected into a laboratory mouse that showed monogamous behavior afterwards.
1BjW TIL Woody Harrelson’s dad was a hitman and died in prison while serving a life sentence for killing a Federal Judge.
9lr7 TIL NASA Managers claimed that there was a 1 in 100,000 chance of a catastrophic failure aboard Challenger, but Richard Feynman discovered that NASA’s Engineers estimated the chance of a catastrophe at closer to 1 in 200.