In January 2014, we conducted a nationally representative experimental study and found that the terms global warming and climate change often mean different things to Americans. The two terms activate different sets of beliefs, feelings, and behaviors, as well as different degrees of urgency about the need to respond. We found that the term global warming is associated with greater public understanding, emotional engagement, and support for personal and national action than the term climate change.
See on www.climatechangecommunication.org