Mysterious booms in Midwest town solved?

Mysterious booms in Midwest town solved?

Mysterious booms in Midwest town solved?, USGS: Micro-quake near Wis. city bothered by booms, Scientists trace the likely source of an eerie phenomenon — but locals have a hard time believing it. A minor earthquake occurred this week near the eastern Wisconsin city where researchers have been investigating a series of unexplained booming sounds, federal