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TIL that dragon fruit comes from cactuses

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via reddit.com

a8J59 TIL about the Tarantula Hawk, a type of spider wasp which preys on Tarantulas. The wasp uses its sting to paralyze the spider and drags it to its nest. It then lays a single egg on it. When the egg hatches the larva eats the spider alive slowly and by avoiding vital organs.
D4EV TIL that the first entirely computer generated movie sequence in cinema history was the Genesis Device demonstration video in Star Trek II: The Wrath of Khan. The studio that made the scene would later become Pixar.
yVxwM TIL about the concept of 'digital dementia', a theory that excessive use of digital devices, such as smartphones, computers, and tablets, may lead to cognitive decline.
GAxbj TIL Gimp, the lanyard crafting material, was originally called “Scoubidou” and the fad started in France
GYJG1 TIL Lisa Nowak operated the robotic arm on the International Space Station and also became the first astronaut ever to be arrested. She is remembered for wearing maximum-absorption garments—government-issued astronaut diapers—during her 950-mile drive from Houston to Orlando