Cancer-causing PCB chemicals still being produced despite 40-year-old ban

Exclusive: Research reveals byproduct PCBs may pose growing, unmonitored environmental and human health risk'

Industry could be producing more cancer-causing PCB chemicals today than at any other point in history, despite their production having been banned more than 40 years ago.

PCBs, or polychlorinated biphenyls, are human-made substances that were used as coolants and lubricants in electrical equipment until they were banned due to their links to health problems and because they do not break down easily in the environment.