Headline: Global warming or natural variability?Link: http://www.onenewsnow.com/culture/2015/09/04/global-warming-or-natural-variabili…Publication Date: Friday, September 4, 2015Primary Source: One News NowNon-Cato Author: Chris WoodwardType: new media postFormat: New MediaNature of Mention: quotedScholar: Knappenberger, Paul C. "Chip"Research Area: Energy and EnvironmentSubjects: global warming