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TIL people will implant magnets into their fingertips. Nerves grow around the magnet as the skin heals. The magnet pushes against magnetic fields produced by electronic devices in the surrounding area, giving a “sixth sense” of magnetic vision.

edJJ TIL that this March 14 will be an extra special “Pi Day” because, for the only time this century, we will have 3/14/15 9:26:53!
P1jXG TIL in 1985, the Canadian government banned the use of the name "Beef patty" by Jamaican patty vendors. The legal definition of "patty" at the time only described hamburger patties. After community outrage and mobilisation, vendors were allowed to call their products "Jamaican patties".
ep57D TIL Upon enlisting in any of the United States Armed Forces, each person is federally required by law to take an oath to both the Consitution and the UCMJ, the latter of which includes a duty to disobey unlawful orders.
Lk1GP TIL that in 1999 Sergio Motsoeneng finished in the top 10 in famous Comrades Ultra-marathon by exchanging places with virtually identical brother Fika at toilet stops. Brothers were caught after a newspaper published photos showing them wearing watches on opposite wrists.
69brl TIL about the rare phenomenon of an "en caul" birth, where a baby is born still enclosed within the amniotic sac. Unlike typical births, where the sac breaks before delivery, in these cases, the baby emerges in a transparent bubble-like membrane. This occurrence is less than 1 in 80,000 births