One year ago 47% blamed human activity for globalwarming... now reversed.

From Rasmussen (VIA the HUGG):

Just one-out-of-three voters (34%) now believe global warming is caused by human activity, the lowest finding yet in Rasmussen Reports national surveying.

Forty-eight percent (48%) of all likely voters attribute climate change to long-term planetary trends, while seven percent (7%) blame some other reason. Eleven percent (11%) aren’t sure.

These numbers reflect a reversal from a year ago when 47% blamed human activity while 34% said long-term planetary trends.