"In 2014, the WHO identified air pollution as the largest single environmental-health risk. In 2012, 3.7 million deaths in people aged <60 years were attributed

"In 2014, the WHO identified air pollution as the largest single environmental-health risk. In 2012, 3.7 million deaths in people aged <60 years were attributed to outdoor air pollution, and 80% of these deaths were the result of cardiovascular or cerebrovascular disease." Hard to understate that data point. These deaths were not retirees or generally weakened.