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TIL The tallest dam on earth, the Usoi Dam, is not man-made. The dam is a landslide from the 1911 Sarez earthquake that blocked the Murghab River in Tajikistan. In 2015 the dam survived a 7.2 magnitude earthquake with no signs of deterioration.

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x00o TIL that the Irish last name prefix “Mac” means “son of” and prefix “O” means “grandson of”.
6EMw8 TIL of Mikhail Bulgakov, a Russian writer whose works were banned in 1929. In desperation, he wrote a letter to Stalin and asked to emigrate. To his surprise, Stalin telephoned him personally. Bulgakov said he didn't want to leave and asked to work at the theater. Stalin permitted his request.
J1pel TIL Nuclear Submarines can stay underwater for 30 years of operation. The only resource that limits the time underwater is the food supply for the crew and maintenance of the vessel.
x61M5 TIL the Iroquois Confederacy had just ~12,000 people at the apex of its power (ca. 1700).
yeja TIL that the velociraptor sounds in Jurassic Park are actually the sounds of mating tortoises recorded at Marine World