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TIL -There is Dyslexia for math called Dyscalculia

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d60B TIL Al Sharpton led the public civil rights involvement of a rape case of Tawana Brawley in which 6 whites (including police officers) were accused of raping the young girl and putting her in a trash bag covered in feces. The jury later found the defendants innocent and the story fabricated.
KYg6w TIL that the eunuch in charge of the Ottoman harem (‘the master of the girls’) was always a Black African. The reason and origins of this tradition are unknown, but the Chief Black Eunuch came to wield considerable political power
X0ZaD TIL Due to the similarity between the Irish and Ivory Coast flags, when the Ivory Coast athlete Murielle Ahouré won the 2018 world indoor 60-meter dash, she borrowed an Irish flag from a spectator and reversed it.
OoGOX The sky appears blue for a combination of two reasons. Before white light reaches the Earth's surface, the light waves collide with and bounce off of the nitrogen and oxygen atoms in the atmosphere. Different frequencies of light (in other words different colours) are scattered differently. Higher frequencies (blue and purple) are more easily scattered and thus bounce around in all different directions more than lower frequencies (red or orange) do. The scattering of high frequencies alone would cause the sky to appear blue and purple, but our eyes work better at frequencies near the middle of the spectrum (yellow and green). Since the colour blue is closer to yellow or green than purple is, the sky we see appears blue.
NX4Ve TIL In the 19th and 20th century, there were dozens of documented cases of people's teeth exploding in their mouths. Primitive metal fillings were suspected to be the cause.