Niagara Falls, United States by Daxia ROJAS 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 […]