A large black plume of smoke rises from a chemical plant above the skyline of Kansas City, Missouri. (Photographer: Ed Zurga/Bloomberg News.)

Chemical Fire Darkening Houston Flares as Smoky Odor Spreads

(Bloomberg) -- A blaze at a petrochemical storage facility that covered Houston in a plume of thick, black smoke for a third day intensified overnight as pungent fumes pervaded neighborhoods more t...