Pew Research: More Say There Is Solid Evidence of Global Warming
'An increasing proportion say that the rise in the earth's temps has mostly been caused by human activity. Currently, 42% say warming is mostly caused by human activity, such as burning fossil fuels... Last year, 38% mostly attributed global warming to human activity and in 2010 34% did so'
Pew Research Excerpt:
A majority across all age groups say there is solid evidence that the average temperature on earth is warming. However, those 65 and older are far less likely to think that warming is mostly because of human activity – just 28% say this, compared with 47% of those under 50. Similarly, just 29% of people 65 and older say that global warming is a very serious problem That compares with about four-in-ten in other age groups.
On views about scientific consensus, the age differences are even greater. A majority of those under 30 (53%) say that scientists generally agree the earth is getting warmer because of human activity. By contrast, a plurality of seniors (46%) say scientists generally disagree while just 31% say they agree. Those ages 30 to 64 are divided in whether they think scientists generally agree or disagree about global warming.
Global Warming and the 2012 Vote
Fully 88% of voters who support Barack Obama say there is solid evidence that the average temperature on earth has been increasing over the past few decades while just 8% say there is not. And 63% say that the warming is mostly because of human activity.
By contrast, just 42% of Mitt Romney supporters say there is solid evidence of warming while as many (49%) say there is not. Just 18% of Romney supporters think the earth is warming mostly because of human activity.
Obama supporters also are far more likely than Romney supporters to say global warming is a very serious problem (59% vs. 13%). Fully 58% of Romney supports say it is not too serious or not a problem.