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TIL men ages 20 to 34 have lower grip and pinch strength than the same aged guys did three decades ago, and that the average grip strength for men ages 25 to 29 is nearly 26 pounds lower today than it was before.

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4kXQg TIL that, on October 30, 1939, just under two months into World War II, a German U-boat submarine fired three torpedoes at the ship carrying soon-to-be Prime Minister Winston Churchill, but none of them exploded. Commander Wilhelm Zahn became known as "The Man Who Almost Killed Churchill".
781kO TIL Despite their name, Screech Owls don't really screech. Their call is more of a soft cooing resembling a horse whinny.
e7A4 TIL that a sloths digestive system is so slow it can starve to death on a full stomach
Brjvr TIL that when Glacier National Park, Montana, was named the around 80 glaciers in the park made the name an obvious choice. Today there are fewer than 30 glaciers left. With the number getting smaller and smaller.
Z81OB TIL about Operation Sandblast, the first submerged circumnavigation of the world in 1960, which took 60 days and 21 hours to complete. They generally followed the same path used by Ferdinand Magellan in the first circumnavigation of the world in 1519.