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TIL The Yangtze River is the 3rd longest river but the longest with a watershed in only one country. TIL#2: A few tributaries of the Missouri River start in Canada

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b90dN TIL: Decades of studies have shown that parenting has the largest effect on a child's grades, not the quality of the school. Affluent families produce better grades regardless of the school due to having more interactions with their parents, resulting in a 30 million average word gap by age 3.
wLx88 TIL that Beethoven was metal af. His 5th symphony is usually played as slow as 74 BPM, but he intended it to be played at 108 BPM. He wanted his music to make the musicians and audience uncomfortable - as if "something is impending," like "this is dangerous." (Basically one of the first metalheads)
MeBra TIL the state of Maryland narrows to a width of less than two miles (3 km) in the Hancock area—the smallest non-vertex border-to-border distance of any U.S. state
ZQ4a TIL that most Icelandic people believe in elves or ‘hidden people’ and to this day they still stop construction work, if they hit a hidden people home.
xlyb TIL that bears can drastically reduce their heart rate when injured as a defense mechanism against blood loss.