Electromagnetic fields (EMFs) that typically surround electric power lines should be considered a possible human carcinogen, according to a new report by a National Institute of Environmental Health Sciences panel. The 28-member international panel voted 19-9 to consider EMFs as a possible cause of cancer. The NIEHS, which is part ofthe National Institute of Health, said the panel was most influenced by epidemiological studies that "showed a slight increase" in childhood leukemia risk from "powerline-residentialexposures" and an increase in chronic leukemia risk in adults in "electricity intensive industries".