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TIL billions of years before humans built their first nuclear power plants, 17 natural nuclear reactors were producing energy in Gabon

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ADavn TIL there are two Denis the Menaces - US & UK. Both were created independently of each other and launched on the same day. Both creators agree they didn't plagiarize from each other, and both are still published today.
1xjO TIL that before standard CPR was invented, the dominant response to cardiac arrest was to cut open the chest and massage the heart directly in the hands.
R7O8 TIL that on August 4, 1922, all telephone service in the United States and Canada was suspended for one minute during the funeral of Alexander Graham Bell.
P1KdL TIL about the Teleseme, a signaling device with a dial that luxury hotel guests would use to demand over 100 services including ordering cocktails or manservants. These devices faded out of service by the 1910s as hotels started implementing telephone systems.
7rjoX TIL the renouned British pub meal, 'Ploughman's Lunch', was invented in the 1950s as a marketing exercise. The Cheese Bureau, a marketing body, began promoting it in pubs as a way to increase the sales of cheese, which had recently ceased to be rationed.