December 20, 2012 1:00 am

Studying the Human Fingerprints in the Air We Breathe

NBC 7 meteorologist Dagmar Midcap spoke to Ralph Keeling, a professor at Scripps Institution of Oceanography and the son of the scientist who catalogue the history of atmospheric carbon dioxide levels.

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Hundreds of Golden Retrievers Walk a Mile for the Official Boston Marathon Dog
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Typewriter Shop Owner Receives Gift From Tom Hanks
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