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TIL Polar Bears’ fur is not white, but transparent. The long, coarse outer hairs are transparent and hollow. The thinner undercoat hairs aren’t hollow, but are still colorless. The hair appears white due the air spaces in each hair scattering light of all colors.

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WbJ4 TIL that an early Chinese surgeon named Hua Tuo used Cannabis mixed with wine as an anaesthetic. As a result the Chinese term for “anesthesia” (mázui 麻醉) literally means “cannabis intoxication”.
8aDLL TIL North Korea has 1 of the biggest art factories, which makes both state propaganda, and colossal monuments that many countries have bought eg, Senegal’s African Renaissance Monument, in Dakar, 164 feet tall, taller than Rio de Janeiro’s Cristo Redentor
O1BL TIL That a server at the University of North Carolina was physically lost for 4 years (although online) until they physically traced the cables and discovered it had been walled off.
OooW7 TIL that Beatrix Potter, the author of “The Tale of Peter Rabbit” was also one of the leading mycologists of her time.
1aLbr TIL President Abraham Lincoln exchanged many letters with Karl Marx, and the two men considered themselves friends. Marx, a journalist at the time, wrote extensively about the Civil War and its significance to the struggle of workers and oppressed people about the world