› added 9 years ago

144

TIL of Obsidian. A volcanic glass so sharp, many surgeons prefer obsidian to surgical steel

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OaMe TIL Chik-fil-A workers are trained to say “My Pleasure” instead of “You’re Welcome” because it’s more personal.
V89p TIL: When Paris was liberated in 1944, British and American commanders wanted only white soldiers be involved in the leading French unit, despite the french army being only 40% white - all black soldiers were taken out of an available unit and replaced by white ones from other units.
vPO0D TIL Critical Periods: Periods of time where an organism's brain is extremely malleable and sensitive to stimuli. If the organism doesn't receive the appropriate stimulus during this critical period to learn a given skill- it maybe difficult or even impossible to develop certain associated functions
pyA4 TIL: Shell launched the biggest vessel ever put to sea in 2013. The Prelude FLNG platform is longer than Sears Tower is tall, costs ~$12 billion, will weigh 600,000 tonnes (5 times as much as an aircraft carrier) and withstand category 5 cyclones.
mxP5E TIL Rory Kinnear's father Roy was also an actor and played Mr. Salt in Willy Wonka and the Chocolate Factory (1971)