Americans have grown increasingly polarized in their views on global warming, according to a new poll.

"In general, Democrats view global warming seriously, while Republicans view it skeptically," says Gallup, a research-based consulting company that conducted a survey this month about the environment. 

The poll found that 67 percent of Democrats think global warming will pose a serious threat in their lifetime, compared to just 18 percent of Republicans. It also found that 69 percent of Republicans "think the seriousness of global warming is generally exaggerated," while just 4 percent of Democrats share that belief. The poll was conducted from March 1-8 among a random sample of 1,041 adults in the United States.

Eighty-two percent of Democrats believe global warming's effects have already started, while only about one-third of Republicans agree. Also, about a third of Republicans say they worry a great deal or fair amount about global warming, compared to a whopping 91 percent of Democrats. 

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