If you live in a city, near a highway, or an airport, you may be bothered by a variety of low-frequency noises emitted by cars and airplanes. Research results have been announced that ``ping pong ...

A mysterious "pinging" noise is emanating from the seafloor in one of Canada's northernmost territories, and officials have yet to identify the source. The sound has been heard in recent months in the ...

There have been reports of a mysterious "pinging" sound that is said to be coming from the Arctic sea floor, with the phenomenon now involving the Canadian military. Hunters in a remote Nunavut ...

FURY, Nunavut, Nov. 5 (UPI) --The Canadian military is investigating a mysterious "pinging" sound heard emanating from the sea floor. The sound, also described as a "hum" or a "beep" has been heard in ...