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157

TIL that the hole in the top of pen lids is to prevent children for sucking the lid into their throat; subsequently this provides an air passage in such a case.

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MAYB TIL London 2012 was the first Olympic Games ever to be completed without a single fatality in construction. Over 60 were killed in the construction of the Sochi games
Pl9J TIL an uncontacted tribe still inhabits an island in the Indian Ocean, living as simple hunter-gatherers. They are vigorously hostile to outsiders, and have not yet developed early technologies such as agriculture or writing.
OoQjL TIL That the "seam" on a USB is always supposed to point down (horizontal) or to the left (vertical) when plugging in.
KOnMG TIL in 1997 a division by zero on the USS Yorktown's database system brought down all the machines on the ship's network, causing the propulsion system to fail.
mK6o TIL that alligators in Louisiana have learned to balance sticks on their snouts specifically during egret and heron nesting season, when the birds are actively searching for nest materials. This is the first known case of predators using lures based on seasonal prey behavior.