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TIL that F-111s conducted the longest fighter mission in history in 1986 as a result continental european NATO members closing the airspace to the US Air Force.

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RYea TIL a Cuban cow was killed in 1960 by debris from a failed US satellite.
QNGXX TIL schools have used infant simulator dolls which are designed to behave like real babies by crying, burping, and requiring 'feeding' and diapering, to try to deter teen pregnancy. A 2016 study found that teen girls in schools that used the dolls were about 36% more likely to get pregnant by age 20
Z8yyB TIL that one of the earliest uses for the term Round Robin was a document signed by multiple parties in a circle to make it more difficult to determine the order in which it was signed, thus preventing a ringleader from being identified, a mutiny on a ship for example.
6EZml TIL Researchers in Siberia found a perfectly-preserved 42,000-year-old baby horse buried under the permafrost. It was in such good condition that its blood was still in a liquid state, allowing scientists to extract it.
xRDo TIL During the Korean War, A battalion of 200 U.S. troops, thought to de dead, emerged from behind enemies lines, led to safety by a 10 yr old South Korean boy. The boy was installed as unit mascot.