Niagara Falls (United States) (AFP) – In the US border town of Niagara Falls, residents accustomed to the soothing roar of the famous waterfalls recently discovered a much less pleasant sound: the “haunting hum” of bitcoin mining farms. “I get four hours of sleep, maybe, because of that constant noise,” said Elizabeth Lundy, an 80-year-old retired hairdresser. “I can hear the noise even through the storm windows.”  On a sunny October morning, a mechanical whirring could be heard clearly on Lundy’s front porch. The noise turned to a deafening din as one walked two blocks toward Buffalo Avenue w…

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