http://www.cleanenergy.org/2015/01/20/2014-ranks-as-earths-warmest-year-on-record/

SACE | Southern Alliance for Clean Energy

2014 Ranks as Earth’s Warmest Year on Record

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“Many scientists attribute the warming temperatures to rising concentrations of carbon dioxide, soot and other greenhouse gases in the atmosphere, such as methane and nitrous oxide…”

Originally Published on January 16, 2015 in the Wall Street Journal

http://www.wsj.com/articles/2014-ranks-as-earths-hottest-year-since-1880-1421427411