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TIL that commercial airline pilots help make weather forecasts more accurate

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6XGZ TIL that by many significant measures, the world really is becoming more peaceful. Over the last decade, total combat deaths, civilian casualties, and worldwide public tolerance for armed violence have been lower than at any other time in the past century.
1aNQX TIL that Pluto is so cold that it's covered in frozen Nitrogen ice. About 800,000 years ago, it may have been warm enough to have liquid Nitrogen flowing across its surface in lakes and rivers.
gr5e7 TIL that Coca Cola ran a #MakeItHappy Twitter campaign where a bot would turn negative tweets into ASCII art. It was quickly pulled after it kept tweeting lines from Mein Kampf.
awAJL TIL in 1969, upon request from Richard Nixon, NASA made 250 display plaques for the 50 US states, 135 countries, and the UN. Flags from all the countries and states were flown on board Apollo 11 to the moon and back, and were gifted to each respective state along with fragments of the lunar surface.
XkBk TIL many were critical of Eminem for his homophobic, violent, and misogynistic lyrics. But as a show of support Elton John performed “Stan” with Eminem at the 2001 Grammys, saying that he recognized Eminem’s songs to be written from the perspective of the deranged Slim Shady.