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TIL When Buzz Aldrin and Neil Armstrong landed first time on the Moon, they honored as a Russian astronaut Yuri Gagarin by leaving behind one of his medals…

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Yp417 TIL the original word for a Bear was 'Arkto' but our proto-Germanic ancestors started referring to them as 'bear' which meant 'brown one.' This practice came from a superstitious fear that speaking the predators name would summon him. This is one of the earliest examples of a euphemism.
D1Qgv TIL It takes thousands of years for light to escape the sun, then 8.3 minutes to reach earth. The sunlight we see is thousands of years old.
JYZXB TIL about the door-in-the-face. An attempt is made to convince the respondent to comply by making a large request that the respondent will most likely turn down. The respondent is then more likely to agree to a second, more reasonable request, than if that same request is made in isolation.
5yo9 TIL the blue dye in M&Ms has been found to reduce spinal injury in rats, with the unfortunate side effect of temporarily turning them blue.
xVWJb TIL that there is a restaurant in Tokyo called “The Restaurant of Order Mistakes” that hires waiters with dementia and Alzheimer’s. They may or may not get your order right.