Humans can live for three weeks without food and three days without water – but only three minutes without air. Yet we simply take our air for granted. It’s always there. It’s everywhere. The air pollution that we breathe has changed a great deal over the centuries. It is largely invisible to us but it is having a significant impact on our health and the health of our children.
More than 90 per cent of the
world’s population is exposed to air
pollution concentrations that exceed
World Health Organisation (WHO)
guidelines. Globally, four and a half
million people died pre-maturely
from particle and ozone pollution in
2015. So why don’t we understand
air pollution better? And how have
we allowed it to build to the crisis we
The face of air pollution has changed. Modern air pollution does not look like the thick black industrial smoke from the past. London’s international reputation as the world’s most polluted city, beset with pea-souper smog, has been passed to Beijing. We are all familiar with images of Beijing’s Bird’s Nest Olympic stadium and the Forbidden City shrouded in haze and the city’s residents wearing protective masks. Despite this coverage in the news, Beijing does not head the WHO list of the world’s most polluted cities. It was 56th in 2016 and dropped to 187th in 2017. Of the worst fifty, the vast majority are in East Asia: twenty-four cities are in India, eight are in China, three in Iran and three in Pakistan. Six of the worst fifty are in the Middle East, including four in Saudi Arabia. At the other end of the scale we find small towns in Iceland, Canada, the US and Scandinavia are some of the cleanest. There are some large
cities near the bottom of the list too;
including Vancouver and Stockholm,
showing that air pollution is not an
inevitable part of city life.
As an air pollution scientist at King’s College London, my research has focused on the sources of urban air pollution and how these affect people’s health. I still lead the London network, the largest urban network in Europe. Over the last twenty-five years I have tracked changes in the air that Londoners breathe, given evidence to government and worked alongside health researchers and air pollution scientists from around the world. I have measured how London’s industrial pollution and problems with petrol cars have been replaced by diesel car pollution and home wood-burning. Around the world many people look to London’s low emission zone as an example of action to control the problem, but if it is so effective then why are Londoners still suffering from poor air? Writing this book has allowed me to explore the real, global problem of air pollution. Expanding beyond my London base I will take you from Paris and Los Angeles to India and New Zealand in a bid to understand modern air pollution. The smogs in London and Los Angeles, Scandinavian forest die- back, the Volkswagen scandal and the recent pollution problems across south- east Asia have all prompted steps to clean our air. We will be exploring the impact that air pollution has on our health; the complex shifting political agenda of air pollution control; the tension between public health and government regulation; and the simple, yet crucial, denial of any problem in the first place. There are huge injustices at the heart of the air pollution problem. By using our air to dispose of their waste, polluters are destroying a shared resource and avoiding the full cost of their actions. They leave all of us who breathe poor air to pay the price through our health and taxes…
This book starts in medieval
London. We will follow the evolution
of the way in which we understand
the air around us and the warning
signs that were ignored. In the 1950s,
the deaths of around 12,000 people
in the London smog and the eye-
stinging Los Angeles air finally brought
about concerted actions to control air
pollution, which we will explore in
the book. We will then focus on the
challenges that we face today to ensure
that our air is fit to breathe.
Join me on a journey from the smogs of the past and present to the hopefully cleaner air of the future.