In a review of peer-reviewed articles in scientific journals over the period from Nov. 12, 2012 through December 31, 2013, I found 2,258 articles, written by a total of 9,136 authors. Only one article, by a single author in the Herald of the Russian Academy of Sciences, rejected man-made global warming.
Out of 13,950 peer-reviewed articles published on global warming since 1991, only 23, or 0.16 percent, clearly reject global warming or endorse a cause other than CO2 emissions for observed warming.