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TIL that in 1922 a suitcase containing almost everything the young Ernest Hemingway had written up to that time was stolen in a train station in Paris. No trace of this suitcase has ever been discovered, despite the fact that the unpublished stories it contained would be incredibly valuable.

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Mv5B TIL the US Navy’s most secretive naval base is located in a remote lake in northern Idaho. This base is believed to be used to develop stealth submarine technology and some locals believe that there is an underground waterway to the Pacific ocean used for top secret deployment
LdEV TIL: Adding lanes to highways doesn’t reduce traffic, it increases it…a phenomenon called induced demand
Z8KLp TIL that the term "fragging" comes from the Vietnam War. Soldiers would throw live frag grenades into the quarters of officers they thought were incompetent. "Fragging" unwanted officers became so common that Gen. Colin Powell, a Major at the time, moved his cot every night from 1968-69 to avoid it
BXAy TIL the avant-garde band The Residents recorded an album of 40 one-minute songs, then purchased 40 one-minute advertising slots on San Francisco’s most popular Top-40 radio station and had the station play each track over the course of three days
QJY19 TIL that humans and our livestock account for 96% of all mammal biomass on Earth