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TIL that rubbing your eyes mechanically excites visual receptors in your eye that perceive light, which is why you see spots after

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7Egx TIL that on April 1, 1974, the local residents of Sitka, Alaska woke to their nearby dormant volcano, Mount Edgecumbe, billowing out black smoke. When a Coast Guard pilot came closer to investigate, he found 70 tires burning and the words “APRIL FOOL” spray painted into the snow.
VGJp TIL that when former president Teddy Roosevelt died in his sleep in 1919, Thomas R. Marshall, the sitting vice-president, said “Death had to take Roosevelt sleeping, for if he had been awake, there would have been a fight.”
gMYBy TIL the plane with the longest wingspan to ever fly is the Stratolaunch, it has only flown once.
v1rv8 TIL that during World War One, there were trained dogs called mercy dogs who were trained to after battles carry medical supplies to those injured in the trenches and comfort the dying.
Pd1G TIL over 60 percent of Chinese consumers also say that they are willing to pay more for products labeled “Made in USA” than for those labeled “Made in China”.