Over 200 effects have been reported. Most have been at the borderline of experimental detectability. The claims shift quickly, always one step ahead of the good science. It's what Nobel physicist Richard Feynman called cargo-cult science. After World War II, South Sea islanders set up dummy airbases, complete with hangars and flares, to attract back the military planes that had once brought comfort and plenty.
Bad scientists go through similar rituals and motions of the scientific inquiry.
But the planes never land. In recent years, the health effects of ELF fields have been reviewed by the National Academy of Sciences, the World Health Organization and commissions in Florida, New York, Australia and England. None concludes that any human health hazard has been proved. The results are about as believable as claims of perpetual motion. Or cold fusion.