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TIL A rhino’s “horn” is not a true horn, with a bony supporting core like the horns of cattle or antelopes. It is, instead, an outgrowth of the skin, like human hair or fingernails.

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xVJp5 TIL that a male platypus has ankle spurs that are capable of delivering a wicked sting. So wicked that the excruciating pain can incapacitate an adult human. The pain is also long-lasting, and can even turn into a condition called hyperalgesia.
a86LN TIL Jay-Z managed to obtain the permission to have a sample from Annie on "Hard Knock Life (Ghetto Anthem)" by writing the copyright holder a letter about his childhood trip to see the Broadway musical. However, the letter was a fib and Jay-Z had never seen the show.
E1lod TIL the Appalachian Trail became international in the 1990's and has since been extended with sections from the US through Canada, and into Greenland, Iceland, Europe, Britain, Ireland, Iberia, and into Africa
4X8vg TIL a small town in the Appalachian Mountains, an area usually portrayed as being poor and ignorant in media, elected an all-female town council in 1948 that organized the town’s garbage disposal system and fire department, as well as many other positive changes
VMO00 TIL Philosophers do have consensus over some issues: Free will is compatible with a universe ruled by cause-and-effect, Minds are purely physical (instead of spiritual), and You should switch (hitting 1 instead of 5 people) in the trolley problem.