But 53% of Americans say the EPA should not be able to implement greenhouse gas regulations without congressional approval.
Thirty-seven percent (37%) of U.S. voters blame human activity for global warming, while 47% say itís due to planetary trends. Belief among voters that human activity is the primary cause of global warming has declined significantly over the past year.
Fifty-two percent (52%) of Americans believe that there continues to be significant disagreement within the scientific community over global warming, and even more (59%) say itís at least somewhat likely that some scientists have falsified research data to support their own theories and beliefs about global warming.