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TIL two-thirds of private prison contracts have “occupancy guarantees” requiring states to pay a fee if they cannot provide a certain number of inmates.

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0yNR TIL: 76% of all known serial killers in the 20th century were from the United States
6p7W TIL Hydrogen bombs usually do not contain hydrogen because it is difficult to store. They instead use lithium that is split into hydrogen by an atomic bomb. It worked so well that the first bomb went off with 3 times the expected yield, set the world record, and still holds the US record for yield.
XWdQ TIL babies have accents. example, a French babies cry will end with a rising note, while German babies have a dropping note at the end of theirs. they pick up on this in the womb.
R5ZkQ TIL that the Mid-Ocean Ridge is the longest mountain range on Earth and 90% of it is under the ocean. This system of mountains and valleys criss-crosses the globe and is formed by the movement of the tectonic plates.
R5rj4 TIL that in highly intelligent children, their cortex develops LATER than less intelligent children