Recent research by the International Institute for Environment and Development (IIED) was reported by the New Scientist (6 November 2010) indicating that cities are much more environmentally friendly than we were led to believe.
Advantages of a city include less daily travel distance by city dwellers; better access to public transport; and easier and more efficient utility distribution. People in the IIED re-examined the differences between rural and urban carbon footprints and have shown that cities produce about 30%-40% of the emissions of a country i.e. including rural and urban.
I can understand these arguments but what the report does not say how the emissions were calculated. Anyone can ‘re-examine’ information and draw a different conclusion. For example they can use more up to date information or they can choose more, or less, variables for comparison.
So many people are interpreting information in a way that suits their argument. As it happens so often with ‘emissions’ calculations it is a case of lies, damn lies and statistics. The article does state that ‘the figures may need some qualification before we can arrive at a firm figure for the environmental benefits of living in a city’.
The UN recently reported that 50% of the world’s population live in cities which take up, about, 3% of the earth’s land area. This migration to cities will increase rapidly as the worldwide population continues to grow. This is where cities could have a potential long-term benefit:
• Children in rural communities are a source of cheap labour whereas they tend to go to school in cities making it more difficult to maintain big families.
• Woman in cities tend to have better job opportunities and have their first child much later in life.
This would indicate that cities will help attenuate population growth.
But the mass migration to cities is clearly for a reason. Last year I visited Beijing as part of a UK Trade Mission on Sustainability. There were several presentations that discussed what could be done to improve the conditions for people living in remote rural places – some of the problems these people faced were primitive. Also I saw the poverty first hand when I visited a remote part of China to see the Great Wall of China. It is easy to see why so many people want to live in cities.
Interestingly in my visits to Beijing you do not see the poverty that you see in cities like Delhi. So can we create a society where our cities have no slums? The belief is that cities may be the best place to tackle poverty. Look at the differences in European cities over the last few hundred years. Are slums caused by cities or an underdeveloped economy? Based upon European experience I would say it is the latter and it will be interesting to see if, for example, in India that slums are reduced over the next couple of decades as the Indian economy grows.
Image (Peter Pearson)

We all know that the Copenhagen climate talks last year failed to achieve any agreement that would make a difference. The outgoing UN client chief, Yvo de Boer was recently quoted as saying that there is little or no chance of any effective agreement before the next summit in South Africa in 2011.