global-warming - Google News
Americans Grow More Worried About Global Warming, Poll Finds - Yahoo! News
Americans Grow More Worried About Global Warming, Poll Finds
The belief that people are contributing to the problem is also back on the rise, the survey found, with 57 percent of Americans saying global warming is caused by human activities, down from the high of 61 percent in 2007, but up from 50 percent in 2010.
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