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TIL that Hitler's dentist, Hugo Johannes Blaschke, who held the rank of SS-Brigadeführer, studied dentistry at the University of Pennsylvania in Philadelphia.

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x6X6B TIL the warty comb jellyfish, also known as the sea walnut is the only creature with a disappearing butt. The anus is not visible when it is not pooping.
6EGLY TIL 7 years after the Republic was established, Mao Zedong allowed people to express their opinions on the way the country was being run in a campaign called the Hundred Flowers Campaign. Once this happened,those who said things against the government who were then jailed or unheard of since.
1Y7D TIL the Law & Order sound is trademarked, and described as “two musical notes, a strike and a rapid rearticulation of a perfect fifth pitch interval, which in the key of C sounds the notes C and G, struck concurrently”
6EpJm TIL to explain why there are so many Japanese tourists flocking to see the northern lights, Alaskans made up a lie that Japanese couples have sex during the celestial show for good luck and a blessed child. This lie made it to the NY Times as fact and now it's a common (but false) folklore.
XEM4D TIL Walt Disney himself voiced Mickey Mouse from his premiere in 1928 until 1946 when Walt became too busy to do it.