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TIL In many people who have hay fever, fresh fruits and vegetables can trigger an allergic reaction that causes the mouth to tingle or itch. Proteins in fruits and vegetables cause the reaction because they’re similar to those allergy-causing proteins found in certain pollens.

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X01OP TIL that the names "Arctic" and "Antarctic" comes from the Greek arktos, “bear,” because the constellation Ursa Major, “the greater she-bear” (also known as the Big Dipper), is always visible in the northern polar sky. “Antarctic,” then, means “opposite the bear.”
vPB4D TIL that one of the last songs to play at the World Trade Center before the towers collapsed was a cover of "How Deep is your Love"
k991 TIL a stray pit bull adopted an orphaned kitten and kept her alive by nursing her on her own milk. After being rescued the kitten was bottle-fed, but the dog refused to leave her side, howling if separated and licking her clean as she ate. Upon adoption from the centre, they came as a pair.
XEpMP TIL in 2016, Alex Trebek, the host of "Jeopardy!", donated a total of $7.5 million to his Alma mater, University of Ottawa, to fund a Forum for Dialogue and a Speaker Series. The goal is to expose students to different world views through discussions and panels by speakers from around the world.
w7YY TIL of Verona Rupes, a cliff face located on Miranda, one of the moons of Uranus. At 33,000 feet, over six miles tall, it is the highest point known to man. Falling from the top would take a full 12 minutes.