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,

People in the northern part of Rockdale County were ordered to evacuate and others were told to shelter in place with windows and doors closed.

A hazardous chemical fire at a Conyers plant closes I-20 and forces evacuations, marking the third major incident in seven years.