In what sense does the public need to understand global climate change?

In a survey of 1,218 Americans, the key determinant of behavioral intentions to address global warming is a correct understanding of the causes of global warming. Knowing what causes climate change, and what does not, is the most powerful predictor of both stated intentions to take voluntary actions and to vote on hypothetical referenda to enact new government policies to reduce greenhouse gas emissions. Identifying bogus causes (e.g., insecticides) correlates with the belief that the globe will warm, but is only weakly related to voluntary actions and not at all related to support for government policies. General pro-environmental beliefs and perceptions that global warming poses serious threats to society also help to explain behavioral intentions. The explanatory power of an air pollution framework is substantial in bivariate analyses, but has little explanatory power in multivariate analyses that include knowledge, risk perceptions, and general environmental beliefs. Translating public concern for global warming into effective action requires real knowledge. General environmental concern or concern for the negative effects of air pollution appear not to motivate people to support programs designed to control global warming.