It isn't 97% any more. Everybody quotes that one number from a few years ago on the scientific consensus on Global Warming. But a more recent study found one (1) paper by one (1) author rejecting Global Warming in 2013.
James Lawrence Powell wrote
I have brought my previous study…up-to-date by reviewing 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.That's 99.989% of scientists supporting Anthropogenic Global Warming, and 0.011% against.