LiveScience: Republicans have become more concerned about climate change in the past couple of years, according to a new Gallup Poll.
Self-identified Republicans are less likely than Democrats to say global warming concerns them, but while Democrats' global warming anxiety has remained relatively steady, Republicans' worry is climbing. In 2011, just 30 percent of Republicans said they worried a "great deal" or "fair amount" about climate change. This year, that number reached 40 percent.
The poll queried...