Clintonville, Wisconsin Booms Heard Around World?

There are many possibilities for where these "Booms" are coming from.. So many have different ideas and thoughts. Personally I believe the Ground is Thawing out from winter.. but with no answers as of yet, who can really say WHAT it is..  I found this video a little interesting, yet humorous at the end..

Uploaded by geobeats on Mar 22, 2012>
Mysterious Clintonville Booms - Where Else Are They Heard? - as part of the news and politics series by GeoBeats.

Residents of Clintonville, Wisconsin are being woken up by strange underground booms and no one has been able to solve the mystery yet.

Some concerned residents have even left the town.

These have only been reported in Clintonville, not in nearby towns and they have only occurred at night. There is no mining in the area, no military exercises, and officials have checked the gas and water lines.

Such booms have been felt before in other parts of the world before.

Cape Fear, North Carolina was jolted by unexplained booms end of February, 2012.

For more than 200 years, people living around Lake Seneca have been hearing mysterious booms and there are all sorts of legends around them.

These have also been heard near sand dunes as witnessed by the Bedouins people in Egypt.

Another area that has witnessed this phenomenon is around North Sea, Japan.

In the past some of the booms have been attributed to earthquakes but authorities are still trying to figure out the cause behind the ones in Clintonville. Ofcourse, there are plenty of conspiracy theories - take your pick - UFO invasion, world ending in 2012 or a top secret military experiment.