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Chemistry

The Role of Radical Intermediates in Atmospheric Smog Formation

Quick fact

A single hydroxyl radical can trigger the oxidation of thousands of VOC molecules, leading to the production of multiple ozone molecules, making these ultra-short-lived species powerful amplifiers of smog.

Why this is interesting

Have you ever noticed a brownish haze hanging over a city on a hot, sunny day? What you're seeing is a chemical chain reaction, powered by sunlight, that relies on short-lived molecules you've probably never heard of—radicals.