A chemical plant fire that ignited Sunday has left more than 90,000 residents of a Georgia county sheltering in place. The big picture: Air quality surveys detected chlorine, a harmful irritant, in the air emitting from the Conyers,

A day after a massive chemical fire sent a cloud of toxic chlorine gas into the atmosphere, more than 90,000 residents in Georgia's Rockdale County were told to remain sheltered indoors on Monday.