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TIL that in the late 1800s, religious activist and U.S. Postal Inspector Anthony Comstock destroyed more than 30,000 pounds of books, and influenced Congress to ban the sale of "obscene" books. The resulting law was so broadly applied that some medical textbooks became illegal.

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lyg1 TIL to help airline passengers deal with travel anxiety, San Francisco International Airport has hired the nation’s first airport therapy pig. LiLou wears costumes and performs tricks to help travelers calm down before boarding their flights.
xVew0 TIL Blueberries and raspberries have the same pigment compounds, anthocyanins. Blueberries are blue because they are less acidic. If you add an acid like vinegar to crushed blueberries, they will turn red. Adding a base like baking soda will return them to blue.
P1mOe TIL that the most significant temperature change in 24 hours occurred in Loma, Montana, on Jan 15, 1972. The temp rose by 103 degrees, from -54 degrees Fahrenheit to 49 degrees Fahrenheit. This change holds the world record for the largest 24-hr temperature shift.
GYVr4 TIL social network Bebo was bought by AOL for US$850 million. 5 years later, the original owners bought it back for US$1 million.
WkaLo TIL that wolves get 7 hours of sleep on average per day, while mice get 14.5.