Americans increasingly are convinced that Earths climate is changing and show more support for regulating greenhouse-gas emissions, finds a Duke University online survey released Thursday.
The share of Americans who say climate change is occurring 50 percent say definitely and 34 percent say probably has rebounded, reaching what may be its highest level in national polls since 2007, according to the survey of 1,089 adults conducted Jan. 16-22. Slightly more than half, or 54 percent, say climate change is primarily the result of human activity such as the burning of fossil fuels.
Whether in response to extreme weather events like mega-storm Sandy or the improved economy, public opinion has clearly rebounded from its low point of a couple years ago, said co-author Frederick Mayer, an associate professor at Dukes Sanford School of Public Policy.
More people also want to see action to fix the problem, echoing President Obamas pledge to tackle climate change in his second inaugural address last month. Nearly two-thirds, or 64 percent, strongly or somewhat favor regulating greenhouse-gas emissions from power plants, factories and cars, and requiring utilities to generate more power from clean low-carbon sources such as solar or wind energy.
Yet relatively few respondents favor market-based approaches such as a tax on carbon. Less than a third, or 29 percent, favor cap-and-trade, in which companies buy pollution credits if their emissions exceed a limit. Although support is low, many Americans have yet to form an opinion about this approach; 36 percent say theyre neither for nor against it.
Like other surveys on climate change, the Duke poll finds strong partisan differences in the perceived seriousness of the problem. About half of Democrats say it is very serious while 35 percent of independents and 17 percent of Republicans agree.
Funding for the poll, which has a margin of error of 3 percentage points, came from Dukes Climate Policy Working Group.
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