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TIL In a Study just published in Scientists Grew Mini Organs From Stem Cells That Build Their Own Blood Vessels

Read more nature.com

via reddit.com

kOwx5 TIL Rutka Laskier, a Jewish girl from Poland who died in the Nazi Auschwitz death camp at the age of 14, wrote a diary describing her experiences, and her diary was brought to light and published in 2006
D1eeV TIL that a blue whales tongue weighs as much as an elephant.
jNpPa TIL that the character Guinan in Star Trek:TNG, played by Whoopi Goldberg, was named after an American actress, producer and entrepreneur, Texas Guinan. A colorful character who would greet her speakeasy’s patrons, “Hello, Sucker! Come on in and leave your wallet on the bar."
AD9ba TIL of Cahkoia, a great Native American city near current day St Louis, which had a population in 1250 AD bigger than London
BPvW TIL the sperm whale was named after a semi-liquid, waxy substance found in the whale’s head that researchers mistakingly thought was semen