Are cars causing Global Warming?(1x57.com)
1x57.com
Are cars causing Global Warming?
http://1x57.com/2011/09/03/are-cars-causing-global-warming/#.TmJZIy1KK0g.hackernews
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http://1x57.com/2011/09/03/are-cars-causing-global-warming/#.TmJZIy1KK0g.hackernews
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