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TIL a modern jet fighter is purposefully designed to be aerodynamically unstable, with onboard computers which constantly work against this instability. This allows the jet to pull off super-agile manoeuvres by relaxing the efforts of the computer systems

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rRZeW TIL Microsoft invested $150M in Apple during its decline in the late 90s, largely to combat anti-trust regulations. It saved Apple, and Microsoft sold off its shares when their deal was over, in 2003. Had they held on, the shares would be worth over $20B today
VM0EZ TIL out of the 3 volunteers who went in 1986 on a suicide mission to open the valves of the pool at the Chernobyl plant 2 are actually still alive
b9brE TIL in 1909, the first truly salacious hit song “I Love, I Love, I Love My Wife—But Oh! You Kid!” made the leap from vaudeville stage to the sheet music stands of a million parlor room pianos in America, inciting newspaper editorials, outraged sermons by preachers, and at least one fatal shooting.
7rM4P TIL Essential Oils are not 'essential' or indispensible for the human body (like essential amino acids and essential fatty acids). The word 'essential' in Essential Oils simply means it contains the essence of the plant's fragrance.
xV0g1 TIL Three-quarters of U.S. teens and adults are deficient in vitamin D, the so-called "sunshine vitamin" whose deficits are increasingly blamed for everything from cancer and heart disease to diabetes, according to new research.