Everyone can see that the climate is changing. In Milan, to quote, in 50 years (1961-2010) the average summer temperatures have increased by 2 degrees, the periods of drought have been prolonged (the record is 48 days without rain) interrupted by ‘tropical’ storms that cause flooding and, in other cities, sometimes floods with numerous victims and considerable damage to which must be added the dead, especially the elderly and frail, due to heat waves. The phenomena are increasing exponentially. This has significant consequences on the cities of the globe, where over half of the world population now lives. Speaking about it at the Smart City Observatory of the Bocconi University of Milan, I recalled how in the building-urban planning sector, under the pressure of the EU, a double action is taking place: on the one hand, aimed at directly affecting the causes of climate change policy for the reduction of CO2 emissions and, more recently, of methane). On the other hand, a functional redevelopment process is underway for the existing buildings. In other words, a rethinking of the functionality of urban structures also in light of the centrifugal and deterritorializing trends in progress, which worsened following the pandemic event: let’s think about smart working, distance learning, e-commerce, telemedicine, culture, to entertainment and online leisure, etc. The condition of cloistered life faced during the entire period of the lockdown has accentuated the search for housing solutions aimed at allowing greater contact with light, air and nature. A search for the projection of man outside the housing cell building; a search for an extension of the house in nature. Among other things, it should be noted that in Italy the city problem for ecological purposes is more serious than elsewhere. With the anti-nuclear referendum option, in fact, the choice was made to pollute (through the prevalent use of hydrocarbons – oil, methane – and not electricity, district heating, renewable energy) where energy is consumed, that is within cities (which have become heat islands), and not where it is produced, that is, in the open countryside, a place where the disposal of pollution would be easier.
Achille Colombo Clerici
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