Well this in a headline certainly got my interest. I consider myself a Scientific American on-line reader, see my Links page.
It was claimed in the the Wall Street Journal but actually turned out to be pure spin of a very flawed rough online poll carried out by the Magazine and they have refuted it and rebuked the author.
Just how desperate do these science deniers have to be? I have started to think it is all in an attempt to justify their own beliefs.
As to what Scientific American readers actually think;
"40 percent of respondents said that over the past year they became "more certain that humans are changing climate"; 46 percent said their views were "unchanged" and only 14 percent were "more doubtful that human activity is affecting the climate."