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    When cities overheat

    Urban overheating is becoming a recurring phenomenon, resulting from the cumulative effect of climate change and the Urban Heat Island (UHI) phenomenon. Climate change is leading to an increase in the intensity and duration of heat waves (hot air masses causing high temperatures for several consecutive days) in different parts of the world. These meteorological phenomena themselves reinforce the UHI, a climatic effect causing a difference in temperature between the centre of urban areas and outlying or natural areas, which can be greater than 10 °C during heat waves. The effect is even more pronounced at night, when the heat stored by artificialised land and buildings is released into the air, keeping the temperature high. Faced with the various consequences (social, environmental, economic) and climate projections, local and regional authorities are now faced with the need to adapt their cities in order to combat this phenomenon. Below is an overview of the challenges and solutions.

    Let’s imagine tomorrow’s buildings together

    The collective foresight approach “Let’s imagine tomorrow’s buildings together”, initiated by the Scientific and Technical Centre for Building (CSTB) and the French environment and energy conservation agency (ADEME), aims to prepare for the future of buildings in France by 2050 by sharing the different visions of construction and real estate players. Bouygues Construction is one of the partners in this open and collaborative approach that aims to plan ahead for the future of our buildings.

    Sustainable construction – a return to straw?

    Straw is increasingly becoming a part of the construction sector due to its low cost and great insulating properties. This return to basics is also driven by a desire to build in a more environmentally friendly way. This renewable insulating material has a lot going for it, including being a better circular economy solution and having a low carbon footprint, even though it requires some guidance in and care over its use.

    Urban agriculture: what economic model?

    Under lockdowns, many French people started to cultivate their own garden, including in cities or on the outskirts of cities, confirming the success of certain forms of urban agriculture. Major cities are becoming visibly greener, but does urban agriculture have an economic model that will ensure it has a stable future?

    What paradigm for Green Cities?

    In June 2020, eight major French cities saw their municipal councils taken or held by a Green majority: Lyon, Strasbourg, Bordeaux, Grenoble, Tours, Annecy, Besançon and Poitiers. What do these green municipalities plan for the territories?

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    Forward thinking

    Our Prospective Lab decrypts trends, analyzes new initiatives and detects weak signals announcing ruptures.

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    CAHIERS DE TENDANCES

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