HOUSTON (AP) — Houston’s lack of zoning restrictions has left many residents with neighbors they don't want: petrochemical facilities and businesses that handle hazardous materials.That unease was laid bare again last month when a massive explosion...

NEWBURYPORT, Mass. (AP) — Several explosions rocked a plant in Massachusetts that manufactures chemicals used in medicines Thursday morning, blowing a hole in the roof and leading to an evacuation but no injuries, authorities said.Authorities said there...