Progress in enlightenment comes slowly

According to a new Pew Research Center study, a strong majority of Americans are once again willing to consider the reality of global warming. Unfortunately fewer Americans are willing to attribute recent warming trends to human activities.

Republicans are the laggards in this matter, as any sentient person would expect:

Americans also misjudge the degree of consensus among scientists over the global warming hypothesis.

Climate scientists have achieved a remarkably strong consensus (.pdf) on the reality and causes of global warming.