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TIL that a man tracked down a kid and strangles him over Call of Duty.

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7r7rO TIL in Scandinavia the Kiruna to Narvik electrified railway carries iron ore down a steeply graded route. On the way down the trains generate large amounts of electricity by regenerative braking, which is sufficient to power the empty trains back up the track and pump excess energy into the grid.
lodaN TIL of a device called Stentrode that functions as a brain–computer interface (BCI). It allows people with paralyzed or missing limbs to use their neural signals or thoughts to control computers and other devices. Human trials using the implanted device have begun.
XEo1D TIL the names of the states Kansas and Arkansas have the same root, the name of the Kansa tribe, thought to mean "people of the south wind". However the 'kansas' in the states' names are pronounced differently due to Kansas being an English derivation, and Arkansas being a French.
GYBEE TIL that a 14th century Moroccan explorer Ibn Battuta went as far as modern Indonesia, China, India, Russia, Central Asia, Balkans, Spain, Tanzania, West Africa and Maldives, and was by far the most well-travelled human before the modern era. He wrote an account of his travels, known as The Rihlah.
jN8vM TIL, The US state of Michigan used to be part of the Canadian province of Quebec in 1774, while the United Stated didn't have uncontested control of Michigan's Upper Peninsula until 1818.