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TIL that researchers have developed a wearable bioreactor that, with just 24 hours of use, can induce long-term limb regeneration in adult Xenopus laevis frogs. This treatment led to significant tissue regrowth and functional recovery over 18 months.

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eGvb TIL that Benjamin Lay was an 18th century Quaker vegetarian abolitionist who once kidnapped the child of slaveholders temporarily, to show them how Africans felt when their relatives were sold overseas
5YANP TIL that in the 18th century, many prominent voices were concerned by the threat posed by people reading too much. They called it "reading lust" or "reading mania" and warned that it would lead to morally dissolute and promiscuous behaviour.
JmJk TIL that Stevie Nicks, in 1979, wrote one of her best-known songs about the child she had conceived with Eagles frontman Don Henley in 1975; She named her Sara, terminated the pregnancy, and then wrote the song of the same name to the spirit of the baby.
oBMg7 TIL about dazzle camouflage, used for naval ships in WWI. It consisted of "complex patterns of geometric shapes in contrasting colours, interrupting and intersecting each other." This would make it hard for German U-boats to accurately shoot torpedoes.
eydE TIL Aerosmith had once written the music for a song, but couldn’t come up with any words. They finally got their inspiration when they went to see the movie Young Frankenstein. The song, Walk This Way, became one of the band’s biggest hits.