Wildfire Smoke Erodes Gains

College ParkWildfire smoke now outweighs human-caused prenatal pollution.

Prenatal exposure raises the risk of preterm birth and lifelong respiratory disease.

Human-source pollution fell 37% since 2003 while wildfire’s share doubled, evading a law that only regulates permitted emitters.

Researchers say the next challenge is helping pregnant women manage wildfire-smoke exposure directly.

Sources: Ars Technica