› added 3 weeks ago

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TIL that the CIA created a gun that could shoot darts causing heart attacks. Upon penetration of the skin, the dart left just a tiny red dot. The poison worked rapidly and denatured quickly, leaving no trace. This weapon was revealed in a 1975 Congressional testimony.

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E1rKP TIL the Arrente indigenous people of Central Australia have released a set of indigemojis. They are a set of emojis relevant to their culture and lives and include cool things such as kangaroo tails, troopies, cowboy hat and swag.
a89lo TIL that “pee shivers” are due to a sudden drop in body temperature that occurs when we urinate. It’s the body trying to warm itself back up
xl5D TIL in 1989, the forward cargo door of a 747 flying from Honolulu to Auckland blew off, causing decompression of the cabin and ejecting 9 passengers from the plane to their deaths over 22,000ft below. 2 flight attendants narrowly avoided being sucked out of the plane.
D1Emr TIL that some species of turtle can breathe through their butt. When hibernating under ice-covered water, the turtles cannot come up to breathe. Since their metabolism is so slow in winter, they don't need much oxygen, so they are able to obtain it by sucking water into the cloaca.
GLyJ TIL of a region near a black hole called a photon sphere where the gravitational pull is so strong that light photons orbit it, meaning if you were at that point and turned to the side, you could see the back of your own head.