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Paris' Air Pollution Balloon

(Agencies)
Updated: 2008-05-16 11:08

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A 22-foot (6.7-metre) diameter helium-filled balloon stands at Park Andre-Citroen in Paris May 15, 2008. Starting on Thursday night, laser beams will light up Paris' Air Pollution Balloon with a specific colour based on meteorological data, green (excellent air quality), orange (mediocre air quality), and red (poor air quality). [Agencies]

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