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TIL that bone marrow donation is much less painful than thought. 79% of bone marrow transplants are now done with basically a more complex version of a blood transfusion. The other 21% is the traditional large needle into your bones, but it's done under anesthesia.

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gMNnD TIL That before modern refrigerators, Russian and Finnish people would keep live brown frogs in their milk to keep it fresh. It was found that the secretions made by the frogs basically act as antibiotics, killing bacteria, and keeping the milk fresh and safe to drink.
GAn61 TIL a minority of the world's languages are "ergative"—the object of a transitive verb & the subject of an intransitive verb are treated the same. For example: whereas in English we'd say "SHE likes HER" & "SHE walks"; in Basque (spoken in N. Spain/SW France), it'd be "SHE likes HER" but "HER walks"
YPDB TIL that pitch has a viscosity 230 billion times that of water. There is an experiment at U of Queensland; pitch was allowed to drip in 1930, and since that time only 8 drops have fallen. The last drop fell on 28/11/00, and the next drop is expected to fall this year.
9YD77 TIL about Utah’s ‘otherworldly’ Cinamon Hadley — ballerina, goth queen and comic book character. The woman who inspired the look of the DC Comics character known as DEATH, by creator Neil Gaiman.
kOGlg The name Earth is at least 1,000 years old. All of the planets, except for Earth, were named after Greek and Roman gods and goddesses. However, the name Earth is a Germanic word, which simply means “the ground.”