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Bad Emstal, Germany
Technology these days allows us to do things that people in 1943 would have thought science fiction. We can watch live sport on TV from anywhere in the world, We can see young boys being saved from a certain death in flooded Thai caves - live on Facebook. We can send and receive money from banks all over the world without entering a real building. In 1943 a new invention was instrumental in destroying German hydro-electric dams that had been identified as import...