Researchers get new view of how water and sulfur dioxide mix

High in the sky, water in clouds can act as a temptress to lure airborne pollutants such as sulfur dioxide into reactive aqueous particulates. Although this behavior is not incorporated into today's climate-modeling scenarios, ...

The world's most polluted cities

Paris has leapt into the headlines over an alert for dangerous atmospheric particles, yet it does not ordinarily count among the world's most polluted cities.

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