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TIL the word āss in Old Norse means god.

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GYBpE TIL researchers discovered that applying a sonogram to a person's skull and stimulating specific brain regions can alter their mood. One researcher described applying it to his own head and later feeling like he had a martini. They hope to develop a sonogram-based device to treat mood disorders.
wLRP7 TIL that Formosa Province in Argentina is the antipode with Taiwan, which was historically also known as Formosa. European sailors speaking different languages gave the same name to two areas at exact opposite points of the Earth.
E1k5X TIL that in most states, a "Certificate of Need" is required before a new hospital can be established. A new entrant has to prove that its services and capacity are "needed,” and existing hospitals are given a chance to argue why the entrant should be barred. This is meant to control care costs.
nW61b TIL that photosynthetic archaea(single-celled organisms similar in some ways to bacteria) absorb light using rhodopsin instead of chlorophyll, which is the same protein that our eyes use to see. The way they consume their food is the same way we see the world.
b6PD0 TIL If you add the extra 4 digits to your zip code, your mail will be sorted and sent faster