Sustainable living is "not viable outside cities" says Hélène Chartier of C40 Cities

Hélène Chartier, head of zero-carbon development at C40 Cities, recently discussed the critical need for sustainable urban living in an article published by Dezeen, authored by Jennifer Hahn. The piece highlights the importance of urban areas in housing the world's growing population and the urgent need to protect these cities from climate risks, which have been significantly underrated.

According to Chartier, living in cities is the most effective strategy for reducing emissions. Cities currently house 55% of the global population and account for 60% of emissions. With projections indicating that nearly 70% of the population will reside in urban areas by 2050, there is a pressing need for cities to adapt and evolve. Chartier underscores that urban infrastructures, such as decarbonized public transportation and sustainable waste management systems, are essential for fostering a sustainable lifestyle.

The latest report from the UN's Intergovernmental Panel on Climate Change (IPCC) emphasizes that cities have not adequately prepared for the climate impacts that are already being felt worldwide. The report warns of increasing heatwaves, floods, droughts, and storms, necessitating urgent adaptation alongside mitigation efforts. Chartier notes that urban planning must focus on creating greener, more compact cities that can withstand the impacts of global warming.

Chartier points out that architects play a significant role in addressing climate change. Buildings contribute to approximately half of a city's carbon footprint, and thus, eliminating emissions from energy use and construction materials is vital. The C40 Cities initiative encourages the development of low-carbon urban areas through competitions like Reinventing Cities, which aims to promote experimental developments across multiple cities.

To reduce emissions, Chartier advocates for creating polycentric cities that include self-sufficient neighborhoods where all daily necessities are within walking or cycling distance. This approach would also allow for the regeneration of forests and other ecosystems, which can serve as carbon sinks. Chartier emphasizes the need for local governments to enforce growth boundaries to limit urban sprawl and reduce reliance on road transport.

As urban areas become denser, they face heightened vulnerability to climate change effects. Chartier asserts that all new building projects should begin with a climate change risk assessment to identify potential hazards. She recommends incorporating greenery and nature-based solutions, such as green roofs and permeable surfaces, into urban designs to mitigate heat and manage rainfall effectively.

In conclusion, Chartier's insights reflect a critical understanding of the relationship between urban living and sustainability. By focusing on decarbonization, compact design, and the integration of nature into urban planning, cities can significantly contribute to fighting climate change while accommodating a growing population.