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TIL cows are fed magnets that stay in their stomach for life to collect metal objects like nails or barbed wire that the cow will occasionally eat, thus preventing the objects from getting stuck in their intestines and causing “hardware disease”

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OXEg TIL The Mummy had a hazardous production. The cast and crew had a special drink to prevent dehydration, many crew members had to be airlifted out after snake and spider bites, the production took out kidnapping insurance on the cast and Brendan Fraser almost died filming the scene where he’s hanged.
nWWjd TIL that in 1985, First Lady Elena Ceaușescu demanded the Piața Romană metro station be removed because she thought "the workers and students were getting fat and needed more exercise". However, the engineers realized the station would be necessary so they built it in secret anyway.
EpnW TIL that in contrast to the Royal Navy, Royal Marines and Royal Air Force, the British Army does not include Royal in its title - this is because the British Army has always been answerable to Parliament and the British people rather than the Monarch.
p8LOO TIL of Mathew Charles Lamb. After killing two people in a shooting spree, he was found not guilty by reason of insanity. He then joined the Rhodesian Army after his psychiatric treatment was complete.
6EdnY TIL that New York City is built on an ancient mountain range so old that it has eroded away entirely. Skyscrapers stand where the bedrock is strongest but can't be built where it isn't. That means the tall buildings mark the spots where the mountains once stood.