The first Public Health Act (1848) was a turning point in modern history for a variety of reasons. Edwin Chadwick successfully made the case that a modern society required a number of “basic” amenities such as housing, clean water and sewage systems. Without these, the toll on human life and thus productivity in an increasingly Industrial Age was dramatic. Looking back this does not seem a radical notion. As more people lived in that industrial society, hallmarked by more to living “cheek by jowl”, more we’re exposed to the negative effects of that change. Snow showed that many people could be contaminated by just a few “dirty” water supplies. The immediate remedy was simple, remove the pump handle, people couldn’t access the water and develop cholera. We know now that the benefits of industrialisation also have negative effects. Pollution due to burning fossil fuels for energy has caused untold health effects. Whilst the most obvious is the most visible, the post-war “smogs”, we now know that there are other, more subtle effects which are causing major health problems, akin to that seen in Chadwick’s time. Like clean water, we should be exposed to clean air to reduce the terrible toll on the health of our society but also it’s productivity. If John Snow were alive, he would point to the obvious short term solution: stop exposure. But it is not so simple and will require a major shift in our behaviour, our values, and our thinking. Perhaps the rapid shift to a post-industrial age, the technological age, will deliver this shift. But we need it now to reduce the generational impact of air pollution.