› added 5 years ago

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TIL smartwatches measures blood preassure by emitting light to the skin and reading how much light is reflected back; as the heart pumps blood, it causes a variation in blood volume on the skin and can be detected by change in light absorption, a not-so-new technology called photoplethysmogram.

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ln7G TIL that the space extending from your nose to the center of your lips is called the Philtrum. It serves no function in humans but allows other mammals to carry moisture from the mouth to the nose pad to keep it wet which traps odor particles better than a dry nose pad.
eppPE TIL Barley holds significance as the first grain eaten by mankind and can be consumed as bread, beer, and soups. The ancient doctor Galen recommends dill and leeks for flavoring barley water
N7dL6 TIL singer Tammi Terrell, famous for recording and performing “Ain’t No Mountain High Enough” with Marvin Gaye, was diagnosed with a brain tumor at the age of 22 after she collapsed on stage into Gaye’s arms during a concert. Terrell died at age 24 after eight unsuccessful surgeries to cure her.
B7LK TIL that the sabre-tooth squirrel featured in the 2002 film Ice Age was fictional… until a real one was discovered in 2011.
7rvar TIL honeybees used in almond groves often die of pesticides, lack of biodiversity, arousal from dormancy early. To mitigate, growers split hives, put mail-order queens in new hives, feed bees fake pollen. The "Bee Better" program puts diverse flora in almond groves as natural pest control/bee food.