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TIL printer paper can be traced back to you

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M7Xaa TIL there's a UNESCO World Heritage Site in Alberta, Canada called "Head-Smashed-In Buffalo Jump." It's where the aboriginal people used to chase buffalo off a precipice and then carve up their remains at their camps below.
RYL1 TIL Texas Instruments has a near monopoly on the graphing calculator field, with over 90% of the sales. Due to this the base model specs and price have not changed in 10 years.
9wxnp TIL China has 56 recognized ethnic groups; despite the Han majority, the Wa people, comprising less than 0.03% of the population, somehow dominate the music scene in Yunnan province which they call home. What's more, they generally represent the entire reggae scene.
E1NGp TIL The Rolex Daytona was originally considered an abysmal failure. Having been beaten to space by Omega, Rolex renamed the Cosmograph after Le Mans- then Daytona after licensing issues arose. It was so unsellable dealers literally gave them away. A modern example now goes for $20k.
4L46 TIL that Dr Catherine Hamlin and her husband answered an ad in 1958 for an obstetrician and gynaecologist to set up a midwifery school in Ethiopia. She still works there today at the age of 89. Happy International Women’s Day!