Today we are living in an unprecedented state of uncertainty, in the midst of a viral attack on humankind that is having profound effect on our health and our urban way of life. While it may be the most immediately severe, the COVID-19 pandemic is the not the only crisis causing us to question the way we coexist and our relationship with the world, affected as we are by climate change and the erosion of our eco-system, conflict, religious persecution, displacement of communities and the ever-rising gap between the rich and poor.
As an urban species, growth and quality of human habitat are some of the biggest issues we face today. In the context of the largest wave of urbanisation in human history, for the first time more than half the world’s population lives in cities. Sadly, this isn’t the first global pandemic we have had to face, and probably not the last; it is the proximity within which we live our lives that is one of the main reasons why the virus has been so successful in taking hold.
Cities have played a critical part in human development for almost 10,000 years and they continue to grow in importance as the primary form of human habitation. By 2050, the UN predicts there will be 9 billion humans and that two thirds will live in cities. As the global population continues to grow unabated, the urgent need for space and resources places us in competition with our environment as well as our fellow humans. Paradoxically, it is generally accepted that high-density living is the most efficient way for people to live with lowest carbon footprint, where infrastructure and transport networks can be effective and run efficiently.
Europeans have for thousands of years been living in densely populated societies, where infectious epidemic diseases (such as smallpox, bubonic plague, cholera, etc) have been the major cause of death. But, when we take as an example the violent outbreak of cholera in London in 1854 and the waves of bubonic plague that hit London in 17th century (killing an estimated 100,000 people), it is clear that the rapid spread of disease was symptomatic of a wider malaise – massive unplanned growth in population that the infrastructure couldn’t cope with.
‘…London in 1854 was a Victorian metropolis trying to make do with an Elizabethan public infrastructure.’
– Steven Johnson: The Ghost Map
The current COVID-19 pandemic must therefore be seen in a broader historical context and recognised as a symptom, not the cause, of a wider global problem – a huge explosion of growth in our urban population that, like the earlier lessons in time, has not been adequately learned and planned for. It is easy to be wise after the event, but contagious diseases are more predictable in our high-density urban centres, particularly in the context of expanding urban populations. Surviving and recovering well from pandemics like COVID-19 will therefore depend upon creating healthier cities. So, is it possible to turn this crisis into an opportunity for good urban place-making and the benefits this can bring us?
Now, more than ever, is perhaps the moment to think about what can be done to make our cities healthier. Cities are irrational organisms with a unique character and life of their own; like any organism they need to be fed and nurtured, their waste removed and their arteries kept clear to enable them to evolve and grow healthily. This includes providing them with breathing spaces – the parks, gardens and green spaces – where people can relax in open space, enjoy nature, breathe fresh air and exercise within the context of social distancing.
Large urban populations mean that fewer people have access to open space and nature, and cities like London, New York and Madrid have suffered more than most from the COVID-19 infection. However, living in high densities does not automatically equate to living in insanitary or under-privileged conditions. Evidence suggests that some of the highest density boroughs in London, for example, are also those in which residents enjoy the best health and the highest life expectancy. There is a direct correlation between these areas and the location of some of London’s largest and most treasured open green spaces. After the crisis has abated, there will be many things we need to do to set things straight; perhaps amongst these we could make our cities of tomorrow more liveable and resilient by making them greener and healthier.
This may sound like a solution more suited to the planning of new cities, but history shows us that we can adapt and retrofit our existing cities successfully, often on a grand scale. As Jack Shenker points out in his recent Guardian article of 26 March 2020 (‘Cities after coronavirus: how Covid-19 could radically alter urban life’), the splendour of the Victoria embankment resulted directly from the construction of Joseph Bazalgette’s innovative sewerage system in direct response to the 1850’s cholera outbreak in London. Around the same time, Louis Napoleon and Baron Haussmann were in the process of transforming the congested and disease-infested inner-city slums of Paris into a network of beaux-arts style, tree-lined boulevards that would ease congestion, improve living standards, generate prosperity, eradicate cholera and in due course create a city that continues to captivate the world.
In the UK, London has its unique network of Royal Parks, green spaces and garden squares, and urban expansion in the Georgian and Victorian eras was planned around them. As a direct descendent of this tradition, the city has made a commitment to transform itself into the world’s first city-based ‘National Park City’ – aimed at coordinating and linking existing green spaces to make the city’s greener, healthier and wilder outdoor space more publicly accessible.
Similarly, Boston in the US benefits from the vision of Frederick Law Olmsted, who built an entire park system for the city in the 1870’s known as the ‘Emerald Necklace’. This investment in green infrastructure is a wonderful seven-mile-long network of parks, meadows, marshlands, and pathways that winds through the city and provides a sanctuary from the clamour and grit of urban life. Boston continues to lead the world in city planning with its more recent ‘Resilient Harbour Project’, a series of elevated green landscapes, pathways and protective parks along its 47-mile low-lying shoreline to better protect the area from flooding and increase public access to the waterfront.
Other global cities are also leading the way in investment in ‘green infrastructure’, many conceived in response to the climate crisis and yet all providing inspiration for how to make our cities more liveable, resilient and healthy in the context of the current pandemic. China is designing 16 ‘Sponge Cities’; areas piloting ecologically-friendly alternatives to traditional flood defences. Lush vegetation is being planted to bring down the temperature, and large green open spaces created with permeable pavements, rain gardens, grass swales, artificial ponds and wetlands to absorb rising flood waters.
New York was widely applauded for the transformation of an elevated rail viaduct on the west side of Manhattan into the ‘High Line’, a 1.45-mile-long elevated linear park that took its inspiration from the earlier ‘Promenade Plantée’ in Paris. Now a more ambitious project is planned, called the ‘Dryline’: 10 miles of flood defences along the shoreline will be provided by acres of green space containing protective berms and planting, walkways, promenades and bike paths to protect the city from hurricanes.
In contrast, organising cities like Paris on a smaller scale can also be a demonstration of proactive and big picture thinking. Mayor Anne Hidalgo is proposing to phase out vehicles and to reinvent the city centre as a ‘15-Minute City’ or ‘La Ville du Quart d’Heure’. The aim is to offer Parisians what they need, on or near their doorstep, to ensure an ‘ecological transformation’ and to reinforce the capital as a collection of characterful neighbourhoods or ‘Urban Villages’. This, she hopes, will decrease the need for travel, reducing pollution and stress in the process and create socially and economically mixed districts to improve the overall quality of urban life for residents and visitors.
It would be naïve to imagine that we can eradicate all disease but also inappropriate to think that urban life is doomed as a result. Cities will continue to hold the key to the entire world’s future as centres of civilised culture and expression, and as a vital part of the solution to the climate and health. However, the current pandemic is highly likely to require the further reshaping of our cities, and rightly so as we continue to learn from it.
The role of today’s architects and urbanists in pro-active urban planning is therefore more important than ever, if we are to rise to the challenge of continuing to thrive in close proximity to each other in dense urban populations into the future.