RedOrbit: Much like one theory surrounding the changing global temperatures - Americans concern over climate change has gone in cycles - rising for several years and falling for a few years.
According to a new Gallup poll, Americans concerns on climate change are on the rise, with 58 percent of respondents saying they worry a great deal or a fair amount about global warming.
U.S. worry about global warming is heading back up after several years of expanded public skepticism, a Gallup statement...