Scientific American and Nature recently published the results of a survey they undertook to understand how Americans feel about science. Unfortunately, because they solicited participation via their respective websites, the 21,000 respondents were above-average in scientific understanding: a whopping 19 percent had doctorates, versus around 1 percent of the general population. Predictably, the #1 source of trusted information for this reader group was … wait for it … scientists! The least trusted was “religious authorities.”

Despite this bias, one encouraging finding was that climate denialism is shrinking, and the U.S. is not among the worst offenders. According to the survey, in the U.S. 37 percent of people are “more certain” humans are changing the climate, while 14 percent were “more doubtful” of man-made climate change. In contrast, in Japan 22 percent were more doubtful, and in Brazil, 20 percent. The Climate DeskOverall, however, “Among those respondents who have changed their opinions in the past year, three times more said they are more certain than less certain that humans are changing the climate,” the survey reported.

The Scientific American/Nature survey was directed at a very science-literate crowd. But what about the rest of the nation? Other sources show that believing in climate change is just half the battle. Around 36 percent of Americans believe in man-made climate change, but 30 percent of those believers felt the media was “overstating evidence about climate change,” said a January 2010 report by the Brookings Institution. Brookings found that Americans were decreasingly worried about the effects of global warming, with half declaring it a “very serious problem” in 2009, down from 60 percent a year earlier. A March 2010 Gallup poll echoed these findings, reporting that between 2008 and 2010, 10 percent fewer people thought global warming would pose a threat to them during their lifetimes. For those who are upset by the lack of public concern and legislative action on climate, the news only gets worse when you move from the American public to its elected officials: A Wonk Room survey found that of all the Republican Senate candidates this year, not a single one supports action on climate. Good luck up there on the Hill, climate activists. You’re gonna need it.

Grist thanks its sponsors. Become one.