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TIL barber Poles are are a legacy of the barber-surgeons’ practice of bloodletting. The red represented the blood, the white the bandages, and the blue the protruding veins. This double job was legal until 1745.

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9YZA6 TIL A 227-year-old tree planted by George Washington was pulled down by the wind last year.
16kXd TIL Sub-Saharan Africans trace up to 19% of their genetic ancestry to an extinct hominin species that is NOT found in the DNA of present-day Asians or Caucasians.
awwBo To build the world’s biggest telescope, you first need to cast, shape, and polish the world’s biggest mirrors.
75rP TIL the creator of Wonder Woman was in a polyamorous relationship with two feminists, whom where his inspirations
KYo4Q TIL the world record for the longest time spent under totality (full solar eclipse) is 74 minutes. A group of scientists rode the supersonic Concorde that flew Mach 2 chasing the 1973 Solar Eclipse over Northern Africa.