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TIL about Buy Nothing Day, established to counteract the consumeristic Black Friday

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via reddit.com

xB71 TIL The aerodynamics of the McLaren P1 create more downforce than the weight of the car itself. The rear wing also retracts past 150mph to prevent the downforce from breaking the suspension.
JYExk TIL Insulated glass (critical for modern skyscraper construction) was patented in 1865 but didn’t see commercialization for 60 years; and finally trademarked as Thermopane in 1941.
OQk6 TIL that around 4,000 Brazilian street children “disappeared” after being arrested in a social cleansing leading up to the 2012 UN Conference in Rio. The Brazilian government refuses to say where they are. Around 90,000 people have disappeared in Rio in only two decades. More than half are minors.
drwE TIL Queen Victoria was fluent in Urdu and Hindi.
9ErM TIL in 2014, an 8-year-old boy named Tyler Doohan, saved 6 members of his family from his burning house before finally succumbing to the fire himself while trying to save the last victim, his disabled grandfather.