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TIL scientists have created a two-chambered mouse heart using a modified inkjet printer with cells instead of ink. When shocked with electricity, the heart started beating

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B7nL TIL the Wright Brothers hated the first director of the Smithsonian Institution, who claimed that he flew before them. If the Smithsonian ever gives credit to earlier claims of controlled and powered manned flight, the Wright Brothers’ plane must be returned to Orville’s estate.
VM7G0 TIL Erykah Badu's concert was cancelled in Malaysia in 2012 because it was found that she had applied a temporary tattoo of the word Allah on a part of her body
0p5 TIL there is a plant that grows naturally near poison ivy that “cures” poison ivy rash before it starts.
ZGjD TIL a study by British sociologists found 7 distinct social classes: Elite, Established middle class, Traditional working class, Technical middle class, Emergent service workers, New affluent workers and Precariat. Whom people know and what they do contribute to their class as much as income.
y7jM TIL The CEO of Netflix offered form a partnership with Blockbuster in the late 90s and the CEO of Blockbuster laughed in his face.