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TIL There were only 3 billion humans in 1960

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dD778 TIL the sound a whip makes when you crack it is caused by a sonic boom created when the tip of a whip moves faster than the speed of sound. The whip was also the first man made object to break the sound barrier.
W4M9 TIL Coal Power Plants generate more radiation than Nuclear Power Plants. Coal contains uranium and thorium, both radioactive elements.They occur in such trace amounts in natural coal. But when coal is burned into fly ash, uranium and thorium are concentrated at up to 10 times their original levels.
D1WEg TIL after the Apollo 11 crew returned to Earth, they were quarantined for 3 weeks to prevent any possible microbes from the Moon infecting Earth. However, Buzz Aldrin saw ants crawling in and out of cracks in the concrete, meaning even smaller microbes could have gotten in and out of quarantine.
JYrLk TIL about Aeroflot Flight 3352, a crash that happened as a result of a flight controller falling asleep and not informing a landing aircraft that the runway was occupied with maintanance personnel.
jorE TIL Six years after Martin Luther King Jr.’s death, his mother, Alberta King, was assassinated while playing the organ at her church