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TIL 40% of workers in New York masturbate while on the job

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BrRYe TIL Nanocardboard is made out of an aluminum oxide film with a thickness of tens of nanometers. Its sandwich structure, similar to that of corrugated cardboard, makes it more than 10,000x as stiff as a solid plate of the same mass. Shining a light on a piece of nanocardboard allows it to levitate.
9wNXm TIL that the rare and ancient coelacanth fish give birth to live offspring called "pups"
QNWpM TIL that in spite of a public funeral attended by thousands, blues singer Bessie Smith’s grave was unmarked until 1970 because her husband refused to buy a headstone and pocketed the money when her friends attempted to purchase one on her behalf.
p8vJp TIL The inventor of the PSA test, taken by over 30 million American men yearly to detect prostate cancer, called it a "profit-driven public health disaster". He also stated that the test is "hardly more effective than a coin toss".
50Bp TIL fire hydrants are color coded to indicate the water flow in gallons per minute