December 15, 2009 5:00 amArticlesUnprecedented Warmingby Edward John CraigShare this storyShare on FacebookShare on XShare on LinkedInMore sharing optionsListen to articleText sizeGiftPDFcommentsData from Greenland ice cores, narrated:EJAbout the AuthorEdward John CraigCommentsAdvertisementAdvertisementAdvertisementAdvertisement
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