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TIL that electric toothbrushes were originally intended to help people with limited motor skills

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via reddit.com

MeNVV TIL that in the aftermath of the Great Japan Earthquake of 1923, when fire broke out around the city of Tokyo, 44,000 people went to the river to escape the flames, only to be closed in by the flames on all sides. Almost all were then, in a single moment, incinerated by a 300ft tall fire tornado
78w6M TIL Mr. Spock's Vulcan salute is taken from a traditional Jewish blessing ceremony.
XEjyk TIL that lobsters communicate by peeing out of their faces onto the faces of other lobsters. Now you also have to bear the burden of this information.
Z8r7B TIL that Canadian sports network rivals TSN and SportsNet were once based at the same office complex, with only a parking lot separating the two. Workers would refer to leaving one channel for the other as “crossing the lot”
dD6OB TIL that despite the notoriety of the Three Mile Island accident, wherein the Three Mile Island Nuclear Generating Station suffered a partial meltdown, it resulted in no deaths and epidemiology studies on the region concluded that “the accident had no observable long-term health effects.”