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TIL William Gebhardt invented chili powder as we know it today in the back room café of a saloon that had alligator pits and badger fights.

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yVkbl TIL: About Rock cairns and why the National park service recommends that you do not use them as a guide for hikes
O6w7 TIL medical doctor Donald Unger cracked the knuckles of his left hand every day for more than sixty years, but he did not crack the knuckles of his right hand. No arthritis or other ailments formed in either hand, earning him the 2009 Ig Nobel Prize in Medicine
jNRWE TIL that brass doorknobs (or any other brass objects) sterilise themselves after about 8h since bacteria have a hard time surviving on brass. This is called the Oligodynamic Effect.
9wA57 TIL the "McDonald's Peace Theory" suggests ‘Countries with McDonald’s within their borders do not go to war with other countries with McDonalds within their borders.’
5YYDR TIL a quarter of Grade 4 students, half of Grade 7 students and 85 per cent of Grade 11 students in Canada have their own personal cellphone. They are being used less as actual phones and more as mini computers by kids