The Window Screen That Cleans the Air

February 28, 2015 1:14 AM

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It would be great if somebody figured out how to filter small particles of pollution from the air. The next best thing would be at least to keep them out of people’s lungs.

The first of those goals is a tall order. But researchers at Stanford University have come up with an intriguing approach to the second. Using nanotechnology, they have developed a low-cost filter that captures tiny airborne particles while remaining largely transparent.

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