This report documents a continued upward trend in Americans’ concern about global warming, as reflected in several key indicators tracked since 2008, including substantial increases in Americans’ certainty that global warming is happening and harming people in the United States now. The proportion of Americans who are very worried about global warming has more than tripled since its lowest point in 2011. Increasing numbers of Americans say they have personally experienced global warming and that the issue is personally important to them. …
About seven in ten Americans (73%) think global warming is happening, the highest percentage since our surveys began in 2008. …
A majority of Americans (62%) understand that global warming is mostly human-caused, the highest level since our surveys began in 2008. …
Now, more than half of Americans (57%) understand most scientists agree that global warming is happening, the highest level since our surveys began in 2008, and a large increase (+24 percentage points) since the lowest level for this response in 2010. CONT.
Center for Climate Change Communication, George Mason U. & Yale Program on Climate Change Communication
