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TIL that from 1931 until 1932, two young Black American women toured Europe together - writing articles on their experiences in each country - for the nation's best selling Black newspaper, 'The Chicago Defender'. Among other events, they observed the rise of the Nazi movement in Germany.

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698Qw TIL that being able to roll your tongue is NOT a genetic trait
Z8Qo4 TIL of Sir David Brailsford, a British cycling coach who theorizes if you make a 1% improvement in a host of tiny areas, the cumulative benefits will be extraordinary. Utilizing this theory of "marginal gains"; his teams have won 18 gold medals, six Tour de France titles, and 59 World Championships.
KZEJ TIL Early 60s American astronauts had groupies as there were “plenty of pretty women who would give anything to sleep with an astronaut”
wnyM TIL the five worst cities in the US for air pollution are all in California
4kvJ6 TIL In 1834, Francois and Joseph Blanc bribed an optical semaphore operator to transmit stock market updates to them in advance of regular news. The scheme went on for two years before being discovered.