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Pollution: cars
Combating air pollution - for iPod/iPhone
English - October 09, 2009 02:20 - 3 minutes - 18.6 MB Video - ★ - 1 ratingCourses Education Technology particle filtration filter engine environment britain vehicle transport atmosphere airstream Homepage Download Apple Podcasts Google Podcasts Overcast Castro Pocket Casts RSS feed
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Lab tests are carried out to determine car emissions, but interpreting the data into real pollution statistics is harder than it seems.