From Wired Science:
Earth's skies have dimmed since the mid-1970s, as airborne pollutants scatter the sun's rays and turn blue skies into a milky haze.
The effect was quantified in a study published on Thursday in Science, and widely covered by the press. But the study explained the effect with graphs, and stories only described a phenomena for which words aren't enough.
Enter Photoshop and the guidance of study co-author Kaicun Wang, a University of Maryland, College Park atmospheric scientist. The resulting visualization takes the worst dimming, experienced in southeast Asia, and applies it to a view of the Golden Gate Bridge.
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