With a quick glance, it looks just like any other pedestrian crossing sign -- a yellow, diamond-shaped sign with a person walking. But a long stare at the sign and there's something strange -- a Hula-Hoop around the pedestrian's body. Across the country -- and now Chicago -- these unusual pedestrian crossing signs are popping up and leaving people scratching their heads as to who left them and what they mean. The signs have also appeared in New York, Washington, D.C., and even Utah's Arches National Park. "I figured it was done as a joke," said Paul Puskar, who lives...
