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Sources of Airborne PCBs in Schools February 8, 2023 11:00 AM – 12:00 PM CST Register Polychlorinated Biphenyls (PCBs) are a set of human-made chemicals that are found in the environment worldwide. More than 2 billion pounds of PCBs were purposely manufactured in the United States and sold by Monsanto under the trade name Aroclor…. Read More »