› added 9 years ago

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TIL In 1900, a German mathematician outlined a list of 23 unsolved problems in mathematics that he hoped would be solved in the 20th century. As of 2015, only 10 have been answered.

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AJRx TIL traffic in central London moves at the same speed as horse-drawn carriages a century ago
E1mYx TIL in 1793, Thomas Jefferson requested a 1kg copper cylinder from France, to be used as a weight standard in adopting the metric system in the United States. The ship carrying the copper was blown off course into the Caribbean, where it was looted by pirates.
woonM TIL There are about 600 castles in Wales, which works out around 1 castle per 5200 people.
R7P79 TIL Danica McKellar, the actress who played Winnie Cooper on the Wonder Years, went on to write six books on mathematics, including "Hot X: Algebra Exposed," "Kiss My Math," and "Girls Get Curves: Geometry Takes Shape."
OovBX TIL that despite being chocolate and cream cookies, Oreos are made from vegan ingredients, including pure cocoa (not milk chocolate) and "creme" made from soy, oil, and corn syrup.