Tiny deviations: the new metal detector looks for minute disturbances in Earth’s magnetic field. (Courtesy: iStock/muffinmaker) A compact, low-cost and low-power metal detector that can identify the ...
For most of us, the fantasy of finding buried treasure faded away along with other childhood passions, like my youthful ambition to set a Guinness World Record for building the world’s largest pillow ...
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