A pink and purple plume of smoke that has been seeping out of the Covanta incinerator in Newark is causing some residents to be alarmed. Pink smoke is generally a sign that Iodine is being burned.

ROME -- There's more than black or white smoke wafting over the Vatican. A group of women who say they are priests launched pink smoke from a balcony overlooking the square on Wednesday to demand ...

LANCASTER COUNTY, Pa. — Some residents may have noticed pink smoke coming from the Lancaster Waste-to-Energy Facility in Conoy Township Thursday afternoon. The Lancaster County Solid Waste Management ...