A small glacier near the summit of an Austrian peak has spent centuries freezing history in place. Layer by layer, it trapped traces of airborne particles and chemicals drifting through the atmosphere ...

A new study highlights a surprising lens for tracking pollution trends over centuries: preserved plants and animals housed at natural history museums around the world. According to Shane DuBay, a ...

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Melanie Meade monitors plumes of pollution. Her hilltop home overlooks Clairton Coke Works, the largest coke-manufacturing facility in North America — and Allegheny County’s top source of air ...