If you happen to be standing on the sidewalk just east of the entrance to Barnes & Noble on Union Square, you may be taking a bath in a strong electromagnetic field of 66 milligauss—four to five times a utility line worker's average dose of 14.5 mG. Few New Yorkers realize that magnetic fields emanating from high-current wires leading into and out of step-down transformers located beneath the pavement on virtually every block in Manhattan expose them, if only briefly, to "hot spots" several feet wide that, if experienced daily on an occupational basis, might place them at about eight times the average... More >>>