It used to be that spirits would haunt typical places like creaky homes, old battle sites and crumbling prisons and institutions. But recent evidence suggests they're starting to prefer retail space for their ghostly hi-jinks.

One morning after opening, employees at a store in Midway Mall in Texas discovered that several blankets had been knocked off shelves onto the floor. After checking surveillance video, they were shocked by what they saw -- the blankets seemed to fall for no reason at all, almost as if some invisible force pushed them.

Owner Rhonda Kohles said air conditioning couldn't have knocked them down since vents don't work on that side of the store. And while there have been small earthquakes in the area recently, a quake probably would have caused more damage, she said.

What's your opinion? Is there a logical explanation for what happened? Or is this a true example of paranormal activity?