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TIL that being optimistic lower your chance of suffering from sleep disorders and insomnia

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via reddit.com

rRe8y TIL Colored gems (e.g. rubies and sapphires) at Tiffany & Co. are a massive ripoff because they do not clearly disclose fracture filling treatments. Infused with "colorless substances to improve color and clarity" is the difference between a $100/carat ruby and a $10000/carat ruby.
X0aPQ TIL that NASA's Apollo 12 mission was struck by lightning twice during launch, 36.5 and 52 seconds after liftoff on Nov. 14, 1969. The mission continued successfully thanks to flight controller John Aaron's quick thinking—resetting a crucial system and allowing the crew to safely reach the moon.
pYwRA TIL that coal, solar, and wind's combined capacity factor (actual electrical energy output over time when compared to theoretical output) is merely 8% better than just nuclear energy's capacity factor (92.5%).
jN6ma TIL that it is not possible to resign from the UK Parliament. To "resign", a Member requests that the Queen appoint him/her as "Royal Steward" of a manor (with no duties or pay). Working for Queen while serving in Parliament is illegal, and so by doing this, the Member is ejected from Parliament.
JD8 TIL that in the movie Independence Day, the filmmakers added audio from Jurassic Park, in post production, because they liked when Jeff Goldblum said “Must go faster! Must go faster”.