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TIL Grad student David Radies was doing random sampling for a lichen diversity study in British Columbia when he saw logging tape tied around a red cedar at least two thousand years old. He discovered an ancient forest that was about to be logged, which was then saved as Ancient Forest park

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By: /u/ubcstaffer123

6 September 2026 at 13:34

submitted by /u/ubcstaffer123 to r/todayilearned
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TIL NASA named a crated on the moon "Wan-Hoo", after 'Wan-Hu', an ancient Chinese official who strapped kites and 47 rockets to a chair in order to reach space. His body was never found.

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By: /u/OperationSuch5054

6 September 2026 at 05:02

TIL NASA named a crated on the moon "Wan-Hoo", after 'Wan-Hu', an ancient Chinese official who strapped kites and 47 rockets to a chair in order to reach space. His body was never found.

submitted by /u/OperationSuch5054 to r/todayilearned
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TIL of Terry Fox, who spent 143 days running 3,339 miles across Canada while dying of cancer

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By: /u/flopsyplum

5 September 2026 at 21:50

TIL of Terry Fox, who spent 143 days running 3,339 miles across Canada while dying of cancer

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TIL NBA star Shaquille O’Neal, a fan of visiting zoos, claims gorillas would always go wild seeing him behind glass. Animal expert Ron Magill confirmed this, saying male gorillas were often intimidated by O’Neal’s size and presence.

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4 September 2026 at 08:56

TIL NBA star Shaquille O’Neal, a fan of visiting zoos, claims gorillas would always go wild seeing him behind glass. Animal expert Ron Magill confirmed this, saying male gorillas were often intimidated by O’Neal’s size and presence.

submitted by /u/Giff95 to r/todayilearned
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TIL that nearly 70% of Americans play video games at least an hour each week

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By: /u/TurnOffYourPC

3 September 2026 at 16:59

TIL that nearly 70% of Americans play video games at least an hour each week

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TIL that the famous 'London Fog' of Victorian novels wasn't natural weather. It was toxic industrial pea-soup smog created by burning soft bituminous coal. In December 1952, the Great Smog of London became so thick that movie theaters closed because the screen wasn't visible from the fourth row.

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By: /u/Jesus_H_Christ_AMA

3 September 2026 at 09:15

TIL that the famous 'London Fog' of Victorian novels wasn't natural weather. It was toxic industrial pea-soup smog created by burning soft bituminous coal. In December 1952, the Great Smog of London became so thick that movie theaters closed because the screen wasn't visible from the fourth row.

submitted by /u/Jesus_H_Christ_AMA to r/todayilearned
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TIL Brazil nuts are so high in selenium a single nut can give you 100–160% of your daily requirement. It's possible for just 5 nuts to exceed the 400 µg/day upper limit.

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By: /u/domlincog

2 September 2026 at 20:27

submitted by /u/domlincog to r/todayilearned
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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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By: /u/whoiswhoJH

1 September 2026 at 20:48

submitted by /u/whoiswhoJH to r/todayilearned
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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.

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By: /u/carboncopy95437

1 September 2026 at 15:16

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.

submitted by /u/carboncopy95437 to r/todayilearned
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