Pittsburgh’s air pollution estimated to claim 3,000+ lives per year − and EPA rollbacks aren’t helping
In October 1948, a thick haze rolled into Donora, Pennsylvania, a steel town in the Monongahela Valley, south of Pittsburgh. For five days, toxic fumes from a zinc smelter – a plant that turns zinc ore into pure zinc metal – poured out of the factory’s stacks, became trapped in…
The Conversation ·