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TIL flashing a light at the right frequency temporarily cleared up plaque of peptide amyloid-β in the brains of mice. This plaque build up is characteristic of Alzheimer's disease and clearing it temporarily suppressed its symptoms in the mice

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OGNeY TIL there is a Turkish Hotel built above an ancient ruin with the rooms suspended from steel columns above.
8ewQZ TIL that Walmart tried and failed to establish itself in Germany in the early 2000s. One of the speculated reasons for its failure is that Germans found certain team-building activities and the forced greeting and smiling at customers unnerving.
vK57 TIL that peppers are hot to repel mammals, which damage seeds, but allow birds to spread the seeds because birds are immune to spicy capsaicin
Wk0JY TIL, In 2001 Rowan Atkinson managed to keep his private jet flying after the pilot suddenly fell unconscious.
OyoR TIL in the 50’s, there were so many Congressional hearings on Communists and homosexuals infiltrating the government that one congressman said: “I do not know what homosexuals are, but I never saw anybody get as much free advertising in the Congress of the United States in all my life.”