“For years we have known that air conditioning protects people from extreme heat, but we could only guess by how much because the available data told us who owned an air conditioner, not who could actually afford to run one,” said Kai Chen, associate professor of epidemiology at the Yale School of Public Health.
The strong protective effect of AC against heat-attributable mortality indicates the public health necessity of addressing urban heat by making AC affordable and greening urban spaces, the authors noted.
Ironically not open access facepalm


I think what the other responses are not pointing out is that frame of thinking is blame shifting the ecological issues onto the people themselves rather than those in power making the decisions despite valid alternatives.
Blaming the people en masse leads to thinking that one can decrease their environmental footprint to the point where they will put themselves in danger for minimal societal benefit. Refrigeration and A/C when it comes to residential usage is a necessity.
The changes need to be made in a grander scheme in order to have an actual effect that is in the best interest of everyone.