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- TIL Sleep triggers a "wash cycle" in the brain. Studies show that during sleep, the space between brain cells widens over 60%, allowing cerebrospinal fluid to flush out waste like beta-amyloid. Because of this, pulling an all-nighter stops this waste from clearing, causing brain fog.
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- TIL in 1973, a 2-man submarine laying cables became entangled and trapped 1,575 feet deep in the Atlantic. An international rescue effort brought the men to the surface after more than three days, with only minutes of air remaining. It remains the deepest successful underwater rescue in history.
TIL in 1973, a 2-man submarine laying cables became entangled and trapped 1,575 feet deep in the Atlantic. An international rescue effort brought the men to the surface after more than three days, with only minutes of air remaining. It remains the deepest successful underwater rescue in history.
1 September 2026 at 15:16
