Heatwave impacts French cities

France has faced a severe heatwave this year, with temperatures surpassing 45 degrees Celsius and three distinct heatwave episodes between May and September. These extreme conditions have raised concerns about how cities can adapt to the growing challenges of climate change.

Urban heat traps and their causes

Experts describe modern cities as "pressure cookers" due to the lack of green spaces, heat-absorbing asphalt, unsuitable housing designs, and poor insulation. These factors trap heat and make it difficult for city residents to escape the intense summer temperatures.

Natural cooling solutions in architecture

Architect Vincent Callebaut pointed to the Tao Zhu Yin Yuan project in Taipei as an example of effective cooling without mechanical air conditioning. The design uses natural air currents to channel hot air under a building's foundation, where it cools and is then reintroduced into the structure.

The push for greener urban spaces

Urban planner Sylvain Grisot called for heavily greening neighborhoods and public spaces, emphasizing that natural canopies can help cities connect with the earth. However, he acknowledged that this approach comes with challenges such as pollen, mud, and the presence of both helpful and harmful wildlife.

Need for large-scale adaptation efforts

Quentin Ghesquière, from the think tank Adapt, stressed that major changes will require strong government involvement and large infrastructure projects. He cited past examples like the Paris 2024 Olympic Games and agricultural reforms as proof that such transformations are possible, especially given the high number of heatwave-related deaths and the displacement caused by fires.

Adapting existing cities rather than rebuilding

Sylvain Grisot argued that starting from scratch to build an ideal city is impractical, as 80% to 90% of the future city already exists. He emphasized that the focus should be on adapting current infrastructure rather than rebuilding, noting that only 10% to 20% of the city will be newly built by 2050.