Residents of Lafayette, Indiana were hearing a mysterious hum during a recent cold wave, and they were concerned enough to call the local police to report it. Turns out, the reason for the intermittent humming was do to the recent bitter cold temperatures. Says Duke Energy, “it’s nothing but the sound of the simple physics needed to deliver electricity during the coldest weather in the past few years in Lafayette,” adding that “[i]t’s nothing to be concerned about and there’s no danger involved.”
So there’s your answer, Lafaytte. Now get some sleep!