What do killer smog and wireless technology have in common?

Electromagnetic smog still an unrecognized, deadly pollutant.

The Donora wire mill (which later became part of the American Steel & Wire Company) on the banks of the Monongahela River in 1910. Library of Congress

Little fanfare commemorates the 74th anniversary of the Donora killer smog that hit my southwestern Pennsylvania hometown in October of 1948. As fall settled over that small working-class steel town, toxic, pungent, yellow-gray coal, coke and zinc fumes morphed into a deadly airborne soup that settled…