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TIL that a cell phone contains 10 times more bacteria than a toilet seat. Recent studies have found 17,000 bacterial gene copies on phones and also that Americans check their phones about 47 times per day.

Read more time.com

via reddit.com

Jv9Q TIL in 1810 London came to a standstill from a prank by Theodore Hook who sent out thousands of letters requesting services that included hundreds of coal deliveries, wedding cakes, priests, lawyers, doctors, chimney sweeps, and over a dozen pianos to be delivered to the same address.
nWLoP TIL about unit 731, a Japanese prison camp that engaged in biological and chemical warfare experimentation that resulted in over 10,000 deaths
jgeN TIL The FBI lab has been lying about hair samples for two decades, resulting in innocent death sentences
epDgn TIL The 'lead-crime hypothesis' argues that an increase in lead levels in the blood, due to leaded petrol, was a major driver in the increase in crime in the US. Its subsequent banning also correlates with a significant decrease in crime.
XE7oE TIL that the mayor of Chicago in 1981 moved into the most notorious public housing complex in the country as a political stunt. She lasted three weeks.