- Agrees climate change is caused by human activity: Percentage of population who responded yes when asked if they believed global warming was a result of human activities. In this survey, global warming refers to the current rise in earth's temperature and not climate change as a whole.
- Climate change awareness: Percentage of each country's population who claimed knowing "something" or a "great deal" about climate change when asked: "How much do you know about global warming or climate change?"
- Perceived as threat: Percentage of country's population that perceives climate change as a threat. Results are from a 2008 Gallop Poll.