If cities like Delhi, Lagos, Sao Paolo and Tokyo seem populated today, think what they’ll be like by 2050. The United Nations predicts that by then, 2.5 billion more people will be living in urban centres, making two out of every three people city dwellers.
Cities are hubs for cultural, scientific and economic development, but they can also be stark reminders of the environmental and socio-economic challenges we face. Today, cities are responsible for some 70 per cent of greenhouse gas emissions and consume 75 per cent of the world’s energy and resources. As the human population continues to grow and the planet faces unprecedented threats from climate change, there is a critical need for sustainable urban planning.
The tenth World Urban Forum (WUF)—the foremost international gathering on sustainable urbanization established by the United Nations—focused on the intersection of culture and innovation to address emerging urban challenges.
“Environment is a golden thread connecting culture and innovation, the theme of this year’s World Urban Forum,” said Martina Otto, head of the Cities Unit at the United Nations Environment Programme (UNEP). “Just as addressing climate change must become part of the conservation strategies for our heritage buildings, so must we find inspiration in traditions, be it traditional building techniques or urban form to build the cities of the future. Through innovation, we can create the pathways to make our cities zero carbon, resource efficient and resilient.”
A number of UNEP personnel attended the WUF to showcase ongoing work and projects. One example was the launch of what’s being called the world’s largest real-time air quality databank.
Another project featured was the Law and Climate Change toolkit.
UNEP and UN-Habitat have a longstanding cooperation in the area of sustainable urbanization, implemented through different projects—the latest being the Greener Cities Partnership. The joint mission reflects UN-Habitat’s take on compact, integrated and connected cities and UNEP’s work on cities as a force to achieve a decarbonizing and eco-decoupling economy.
Separately, UNEP supports cities across the world in addressing climate impacts and integrating the environment into their long-term urban planning through three priority areas: economy, nature-based adaptation, and climate and pollution action.
Given the resource surge linked to urban development, cities have a primary role in moving from a take-make-dispose economy to a circular model, where materials and products are kept in use for as long as possible at their highest value. Using their jurisdiction, cities can embed circularity principles into their planning decisions and policies.
Similarly, urban development and particularly sprawl are a driver for habitat loss, impacting the very ecosystems, city residents depend on. Nature-based solutions such as mangroves can be a cost-effective solution to dealing with floods and coastal erosion while also improving air quality.
It’s no secret that cities produce a lot of air and water pollution, both impacting their livability and the health of their citizens. By placing permits for industrial activities and construction, introducing low emission zones, switching to district energy and bettering water and wastewater management practices, cities can reduce their pollution output while also improving quality of life.
February’s Sustainable Development Goal of the month is Goal 11— sustainable cities and communities.