Pre-election tremor shakes Chicago, where Obama's political career was born; payback time

A 3.8 magnitude earthquake rattled Chicago-area homes early Wednesday, waking up residents from Indiana to Wisconsin. The quake struck at 3:59 a.m., according to the U.S. Geological Survey.
"It shook the house, rattled the windows and doors," viewer John Bruno wrote in an email. "It woke us out of a sleep and got the dog barking! It shook our whole house!"

The tremor's epicenter was determined to be in a farm field on Plank Road near Hampshire, Illinois. The quake was originally reported as a 4.3 magnitude tremor emanating from Geneva, about five miles east of Sycamore, but the U.S. Geological Survey revised its statement.