WASHINGTON – A growing majority of Americans think global warming is occurring, that it will become a serious problem and that the U.S. government should do something about it, a new Associated Press-GfK poll finds.
Even most people who say they dont trust scientists on the environment say temperatures are rising.
The poll found four out of every five Americans said climate change will be a serious problem for the United States if nothing is done about it. Thats up from 73 percent when the same question was asked in 2009.
And 57 percent of Americans say the U.S. government should do a great deal or quite a bit about the problem. Thats up from 52 percent in 2009. Only 22 percent of those surveyed think little or nothing should be done, down from 25 percent.
Overall, 78 percent of those surveyed said they believe temperatures are rising, up from 75 percent three years earlier. In general, U.S. belief in global warming, according to AP-GfK and other polls, has fluctuated over the years but has stayed between about 70 percent and 85 percent.
The biggest change in the polling is among people who trust scientists only a little or not at all. About one in three of the people surveyed fell into that category.
Within that skeptical group, 61 percent now say temperatures have been rising over the past 100 years. Thats a substantial increase from 2009, when the AP-GfK poll found that only 47 percent of those with little or no trust in scientists believed the world was getting warmer.
Opinion about climate change doesnt move much in core groups – like those who deny it exists and those who firmly believe its an alarming problem, said Jon Krosnick, a Stanford University social psychologist and pollster.
Krosnick, who consulted with The Associated Press on the poll questions, said the changes the poll shows arent in the hard-core anti-warming deniers, but in the next group, who had serious doubts.
They dont believe what the scientists say, they believe what the thermometers say, Krosnick said. Events are helping these people see what scientists thought they had been seeing all along.
Recent events affect poll results. In 2006, less than a year after Hurricane Katrina devastated New Orleans, 85 percent thought temperatures were rising. The lowest point in the past 15 years for belief in warming was in December 2009, after some snowy winters and in the middle of an uproar about climate scientists emails that later independent investigations found showed no manipulation of data.