› added 4 years ago

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TIL pulse oximeters are calibrated for white skin; the darker your skin, the more likely the pulse ox will overestimate your oxygen level

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GEXg TIL that there is an organization called the National Odd Shoe Exchange where you can send and receive shoes if your feet are different sizes
5LQR TIL it is suggested that staring at fire improved brain functions such as memory and problem solving in early humans
oGar TIL that spanking during childhood has been associated with increased rates of anxiety disorders and substance abuse.
mxXJo TIL until 1970, United Airlines had ‘men only' flights featuring complimentary cigars, cocktails and a full-course steak dinner in the exclusive company of other men (besides the stewardesses, of course).
x68m7 TIL:Japan's population has decreased by more than 4 million people from its peak (2010:128.06million > 2024: 123.99 million)