R-410A bromine or chlorine, R-410A (which contains only fluorine) does not contribute to ozone depletion, and is therefore becoming more widely used, as ozone-depleting refrigerants like R-22 are phased out. However, it has a high global warming potential (1700 times the effect of carbon dioxide), similar to that of R-22. Since R-410A allows for higher SEER ratings than an R-22 system, by reducing power consumption, the overall impact on global warming of R-410A systems will be substantially lower than that of R-22 systems due to reduced greenhouse gas emissions from power plants. R-410A R-410A, sold under the trademarked names AZ-20, EcoFluor
Public opinion on global warming States, in that order, correlating positively with per capita emissions of carbon dioxide. In 2009 Yale University conducted a study identifying global warming's 'Six Americas'. The report identifies six audiences with different opinions about global warning: The alarmed (18%), the concerned (33%), the cautious (19%), the disengaged (12%), the doubtful (11%) and the dismissive (7%). The alarmed and concerned make out the largest percentage and think something should be done about global warming. The cautious, disengaged and doubtful are less likely to take action. The dismissive are convinced global warming is not happening. These audiences can be used to define