THERE is one thing that dominates debate about air pollution and it informs everybody’s view of one of the greatest health problems we face.
There is one simple reason for this. The toxic chemicals expelled from cars are tangible. We can taste them, see them and smell them and their short and long-term effects on our health are well documented.
Historically, change in this area is something that has come from the top. We have relied on governments to act on our behalf but the next great clean air revolution could - and should - turn all that on its head.