A key passage:
Public opinion continues to lag behind the science. Though a majority of Americans accept the climate is changing, just 42% believed human activity was the main driver, in a poll conducted by the Pew Research Centre last October. ... The study blamed strenuous lobbying efforts by industry to undermine the science behind climate change for the gap in perception. The resulting confusion has blocked efforts to act on climate change.
(See also Nov. 5 and 10, 2012, and Mar. 9, 2013 blog posts.)
http://www.guardian.co.uk/environment/2013/may/16/climate-research-nearly-unanimous-humans-causes
