USA Mysterious booms shaking dishes, and nerves, in Wisconsin city

Residents of Clintonville, 40 miles west of Green Bay, have been kept awake this week by a flurry of underground booms. Engineers are looking for the source, but it may never be known.

Ron Page/The Post-Crescent/AP

Before this week, Clintonville, Wis., a small manufacturing city 40 miles west of Green Bay, would hardly have been mistaken for a boomtown.