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TIL in terms of long distance running, there is no animal that can outrun a human

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XlRj TIL that human races do not exist taxonomically. A fixation index of 0.25 is required for a species to have various sub-species. Humans have a fixation index of 0.11, less than half of the required criteria of genetic diversity needed for the existence of sub-species or races.
GkEE TIL Gingers don’t feel pain to the same degree that everyone else does. Redheads are less sensitive to electrically induced pain, but are more sensitive to thermal pain.
V1QD TIL that Doctor Ignaz Semmelweis was an early pioneer of washing your hands during surgery but this concept conflicted with the established scientific/medical opinions of the time and he was committed to an asylum.
0wvkv TIL How Bono from the band U2 exercised one of his newly given rights after receiving Dublin's Freedom of the City award. One of these ancient privileges was the right to pasture sheep on common ground within city boundaries. To celebrate he took lambs to graze on St Stephen's Green.
N6Pb TIL William Halsted, a pioneering surgeon from the 19th century who discovered anesthetic properties of cocaine, eventually got addicted to it. He signed himself up in a sanatorium where his addiction was “treated” with morphine. He remained a morphine addict for the rest of his life