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TIL there are measure for diversity of exports a country produces and their ubiquity, or the number of the countries able to produce them (and those countries’ complexity) called Economic Complexity Index. Japan currently holds first place.

ZpmZp TIL that until 2021, Maryland's state song was "Maryland, my Maryland," a confederate war poem set to the tune of 'O Tannenbaum.' The opening line refers to Abraham Lincoln as a tyrant, and the lyrics go on to describe the Union as "Northern Scum."
6mQm TIL the Game of Thrones showrunners/producers began trying to reduce the amount of frequent character and political intrigues during garden walks, because of the South Park parody episode ‘Black Friday’
E16Md TIL Marie Curie, the first woman to win a Nobel Prize, the first person to win twice, and the only person to win a Nobel Prize in two different sciences couldn't legally attend college, so she did it illegally, going to what was known as the 'Flying University', a secret organization.
kOGO1 TIL Spitting Spiders catch their prey by spitting fluid containing both venom and spider silk that congeals on contact into a venomous and sticky mass. The spiders sway from side to side as they "spit", catching the prey in a crisscrossed "Z" pattern. The entire attack lasts 1/700th of a second.
prwp TIL Jack Johnson (the first ever African American heavyweight boxing champion) was pulled over for a $50 speeding ticket, but he gave the officer $100 telling him to keep the change as he was going to make the return trip at the same speed.