A sound in the city of West Haven has left whole neighborhoods on edge. It’s reported as a low-frequency hum. It comes and ...

Since the early 1990s, residents in and around Taos, New Mexico, have reported hearing a persistent low-frequency sound with ...

Is there any better mystery than one which leaves scientists stumped? There are plenty of mysteries humankind is actively working towards solving, such as how many star systems might exist in the ...