“…Modern research into, and management of, air pollution began in the middle of the twentieth century when serious concern arose about the possible effects of air pollution on health. To a large extent, this was driven by a series of high profile air pollution episodes, such as those in the Meuse River Valley, Belgium in 1930 (Heimann, 1961;Ayres et al, 1972;Pope et al, 1995;Anderson, 2009) and Donora Pennsylvania in 1948 (Anderson, 1967;Snyder, 1994;Chew et al, 1999). In 1952 episodes of smog in London were associated with over 4000 deaths, resulting in the passing of the Clean Air Act (Brimblecombe, 1987;Giussani et al, 1994;Brunekreef and Holgate, 2002;Stone, 2002).…”