[Derek Muir] said scientists have noted "a lot of parallels to PCBs" in the way traces of PBDEs are carried north on air currents and accumulate in the fatty tissues of polar bears and other marine mammals. PCBs, once used to insulate electrical transformers, helped give rise to the ecology movement in the 1970s when the contaminant was found to be...

Flame retardant chemical found in polar bearfat