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TIL the first successful attempt to make a longer acting insulin was accomplished by combining insulin with protamine extracted from trout semen

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XEaPj TIL that the "I" and "O" of a power switch are internationally-recognized symbols for "ON" and "OFF" because they are the binary symbols representing ON (1) and OFF (0), decided by the IEC (International Electrotechnical Committee)
VBJwD TIL the largest non-rigid airship ever flown was in 1958. It was 122.8m long and 36.6 m high, had a crew of 21 people and a maximum speed of 128 km/h (80mph)
Z8kGB TIL that the first westerners to discover Gorillas were Carthaginians who believed them to actually be primitive humans, and named them Gorillai. they referred to them as savages with "shaggy bodies". They then captured, killed and skinned some, taking the skins back home.
16bLX TIL that “miraculous”appearances of bloody eucharist in the middle ages were actually result of growth of a pinkish-reddish bacteria called Serratia marcescens
Egdjw TIL that a YouTuber Scientist is training rat neurons to play DOOm