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TIL the Boeing factory in Seattle is so massive that rain clouds began to form inside the facility until a state-of-the-art air circulation system was installed

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awYJN TIL while Michael Collins was orbiting the moon, mission control warned of a problem with the shuttle's coolant system. Instead of fixing the problem manually as advised, he flicked the system's switch from auto to manual, then back to auto, and carried on with other chores. The issue self resolved.
Bg64e TIL that in 1983, scientists created a machine that temporarily allowed people to see new colors outside of the regular color space.
QNKke TIL that Bayer knowingly sold HIV tainted blood products to 3rd world hemophiliacs because they decided the financial investment of the product was considered too high to destroy
p8oDZ TIL that according to one 2016 analysis, 69 of the world's 100 largest economies were corporations. Walmart was 10th largest, and Toyota was larger than India.
1aaWP TIL: In Feb. 2016 CA SB-1463 proposed laws to mitigate wildfire risks posed by overhead power lines. It passed House & Senate unanimously. Gov Brown vetoed it. California had the deadliest wildfires in history, caused by overhead power lines.