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TIL that the color magenta does not have a wavelength. It’s the product of combining red and blue light, which are on the opposite ends of the visible light spectrum, so our brains fill in the gap with what they think the color should be.

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ewE TIL While filming Alfred Hitchcock’s movie “Rope” a camera operator’s foot was crushed. To avoid re-filming the scene he was gagged and hauled out of the studio.
kOBPd TIL in 2004, corporate attorney Nathan Sawaya quit his lucrative job to build Lego professionally so he could "get away from the daily grind". His sculptures now command six figure prices each.
mkQx TIL starting in 1938, GM bought out the public transportation in many Californian cities, including Los Angeles, Sacramento, and San Diego) and ran it to the ground so people would switch to private transportation.
wLOAP When 50,000 of Mark Rober's 3 million YouTube subscribers participated in a basic coding challenge, the data all pointed to what Rober has dubbed the Super Mario Effect. The YouTube star and former NASA engineer describes how this data-backed mindset for life gamification has stuck with him along his journey, and how it impacts the ways he helps (or tricks) his viewers into learning science, engineering, and design. Mark Rober has made a career out of engineering, entertainment, and education. After completing degrees in mechanical engineering from Brigham Young University and the University of Southern California, Rober joined NASA’s Jet Propulsion Laboratory in 2004. In his nine years as a NASA engineer, seven of which were on the Mars rover Curiosity team, Rober worked on both the Descent Stage (the jetpack that lowered the Rover to the surface) and some hardware on the Rover top deck for collecting samples. In 2011, Rober’s iPad-based Halloween costume helped launch both his creative costume company, Digital Dudz, and his YouTube channel, which now boasts 3 million subscribers and 400 million views. His videos focus on creative ideas and science- and engineering-based pranks and activities. Rober is a regular guest on "Jimmy Kimmel Live!". Today, he does research and development work for a large technology company in Northern California, where he lives with his wife and son.
6EBYQ TIL former Chicago Blackhawks goalie Sam LoPresti once killed a dolphin with basically a shiv, to feed 28 of his shipmates who were stranded on a lifeboat for 42 days, after a German torpedo took out their ship. They cooked the meat in a bucket full of kerosene soaked rags. Hockey players, man...