› added 9 years ago

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TIL police are using technology involving compressed-air launchers fitted into the grills of patrol cars. They fire GPS-trackable devices that stick to vehicles being pursued.

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via reddit.com

D1vPD TIL about the Overton window, which defines what political ideas the mainstream sees as radical according to what they're used to, even if they are not in fact radical.
V7lZ TIL a 2004 study of 43 fruits and vegetables found that their nutritional value has decreased significantly over the past 50 years.
XEQwX TIL: As human mammals we are phylogenetically classified as Deuterostomes, meaning that we evolved as embryos from our anus, outwards. The first step in Blastocyst evolution is Gastrulation; to create our own digestive system from anus to mouth.
E1JyV TIL that the traditional maritime signal flag is today used for the opposite, indicating that a ship is free of disease
rgVW TIL that the once-thought useless human appendix has evolved at least 29 times, and been lost a maximum of 12 times–but evolution keeps bringing it back, possibly due to it having an important role in immune function.