Cities

  • 9 September 2019

    Built environment

    This article is based on Guglielmo Carra’s speech during “Re-Think Forum”. Guglielmo Carra’s speech opened with the comparison of two pictures that portray the city of Shangai, one of them was taken in the mid-1990s and the other one only a few years ago. The difference is clear: the development of the city in the past 20 years was impressive and this trend is common in all urban contexts in Asia, Africa, South, Centre America and also in Europe. It is estimated that by 2050, about 70% of the global population will live inside these cities. It means that every week, a city of 1,6 million people is built. Cities are a place for people, but also a place where resources, coming from outside, are transported to be consumed with a linear approach. This change will impact the construction sector – that, at the current state, consumes 60% of resources and emit 40% of CO2. Improvements are possible since the constructions sector is the least automated ever, so it is also the least efficient, whose productivity of one hour is still equivalent to the one in 1946. Circular Economy can be the solution, in order to enhance the processes and the resources used, not only in the design of the utilization of the building but also by defining what will happen in the future to those materials and resources used for the construction. The 4 areas by Arup Carra presents some projects by Arup that revolve around 4 thematic areas: The regeneration of natural capital, which consists of transforming the city from a place that consumes resources, to a place where resources are produced and regenerated; The creation of open and shared processes by developing and implementing collaborative processes in addition to the promotion of actions and production chain processes....
  • 4 February 2019

    Circular Cities

    3 models for a sustainable city: the Circular Economy applied to the urban context A story of two cities. The first is the city as we have known it so far. The air made unbearable by pollution. It is very difficult to dispose of waste properly. Resources are widely wasted or underused. The other is a sustainable and circular city. Here the waste does not exist, the resources are used to the best according to the rules of the sharing economy and the energy required is completely produced from renewable sources. In the middle, there are the real cities, which are more or less similar to one or the other model. Cities are the first context in which it is essential to apply Circular Economy. They represent an area in which it is perhaps easier to agree on its founding principles. Also because, above all, they are the place par excellence where humans live and will live. Why the cities? According to a World Bank report, 54% of the global population lives in urban areas and in cities, 85% of world GDP is produced (data: 2017). 75% of the natural resources are consumed here, 50% of the waste produced and greenhouse gas emissions equal to 60-80% of the total, according to different estimates. It is therefore clear that we need to start from the cities if we want to influence the way in which human beings live together and exploit resources. Also because the trend is destined to increase; by 2050, 75% of the population will be living in cities. This means that even more funds will be invested in cities: infrastructures will be at the center of the growth strategies for the cities. Increasingly, natural resources, capitals, talents, and data will be concentrated in urban contexts. Moreover, given their relative geographic...
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