There have been reports that "thunderous" sounds echoed around Lake Mead on Tuesday, with videos circulating on social media.

The strange sound sure was timely. I heard it late at night, days before Halloween. It emanated from a swamp surrounded by thick woods and ancient oaks. It’s a place that not many people venture into ...

In Scotland, residents have been hearing a strange humming noise, day and night, which doesn't let them sleep or work. The bigger problem is that no one knows where it is coming from. Some residents ...