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Reducing carbon dioxide emissions is tough if you don't know exactly where those gases are coming from. Scientists at Arizona State University have invented a new way to pinpoint those sources — down to individual buildings and highways.

The electric car may be the next big hope for reducing carbon emissions, but one environmental advocacy group says just how effective these vehicles are…

Scientists from Colorado and other national institutions are wrapping up a three-year research mission to study and measure greenhouse gases in the…