The air pollution that we breathe every day is largely invisible - but it is killing us. How did it get this bad, and how can we stop it? Far from a modern-day problem, scientists were aware of the impact of air pollution as far back as the seventeenth century. Now, as more of us live in cities, we are closer than ever to pollution sources and the detrimental impact on the environment and our health has reached crisis point. Gary Fuller's global story examines devastating incidents from London's Great Smog to Norway's acid rain; Los Angeles's traffic problem to wood burning damage in New Zealand. Fuller argues that the only way to alter the future course of our planet and improve collective global health is for city and national governments to stop ignoring evidence and take action, persuading the public and making polluters bear the full cost of the harm that they do. The Invisible Killer is an essential book for our times and a cautionary tale we must heed.