The 97% consensus quoted daily by Barack Obama is based on a few fraudulent studies of a handful of published papers.
The only study which actually asked the scientists was done by the American Meteorological Society in 2013. It showed that only 52% of professional members believed the cause of global warming was “mostly human.” Among professional forecasters, the number was closer to 38%. No group came anywhere close to 97%.
http://journals.ametsoc.org/doi/pdf/10.1175/BAMS-D-13-00091.1
