Is Smoke From California’s Fires Getting Worse? Hard to Tell

Not for the first time this year, Californians this week donned face masks to protect their lungs from the harmful airborne particles that have smothered the state in a sickly, sooty haze. The pollutants are products of three devastating infernos raging hundreds of miles apart, the largest of which, Butte County’s Camp Fire, has swelled …

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