› added 10 months ago

43

TIL That the dot above an i or j is called a tittle.

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8ao4b TIL about Jaime Escalante. He was able to help hundreds of students to pass the AP calculus test in a school where almost no students went to college. He was forced to leave the school due to death threats and intimidation from other teachers.
aoyb TIL a 37-yo German woman who suffered an accident at the age of 20 that left her blind also had Dissociative Identity Disorder (Multiple Personalities). One of her personalities, a teenage boy, can see.
7m9r TIL that shards of obsidian, or volcanic glass, can be refined to have a cutting edge only 3 nanometers thick. This is over 1300 times thinner than some scalpels.
XDJr TIL a herd of bison were shipped to an island off California 90 years ago for a movie shoot and left there. The herd is still thriving, so much so they have been put on birth control.
grXJL TIL Technetium was the first artificially created element of periodic table filling the gap of Eka manganese noticed by Mendeelev.