A recent survey by the non-partisan Pew Research Center found that a large majority of Americans are skeptical about the prevailing scientific understanding of climate change, with only 27 percent saying they believe there is a consensus that human activity is its main cause. That belief is at odds with the scientific community, Pew noted, citing a 2013 report from the U.N. Intergovernmental Panel on Climate Change that concluded “with 95% certainty that human activity is the dominant cause of observed warming since the mid-20th century.” …