Cities have always been the pulse of human civilization. Today, they are home to 55 percent of the global population, where people live, work, and interact in close proximity. In many ways, cities embody both our greatest strengths and our deepest vulnerabilities. It is no surprise, then, that the COVID-19 pandemic has taken its heaviest toll in urban areas. Estimates suggest that nearly 90 percent of all reported COVID-19 cases have emerged from cities. These dense, interconnected spaces became ground zero for the virus’s rapid spread.

Yet, it is precisely this concentration of people, resources, and ideas that positions cities as the critical battleground for recovery. More than that, cities offer the best chance to lead the world toward a more sustainable, equitable, and climate-resilient future. If we are to build back better, our cities must be the starting point.

Urban centers are not just hubs of economic activity. They are laboratories of innovation. Long before the pandemic, many cities were already pioneering solutions to some of the world’s most pressing environmental challenges. They were experimenting with urban farming to enhance food security, investing in electric mobility and promoting non-motorized transport to combat air pollution. Cities were also leading efforts to develop zero-emission buildings, implement district energy systems, decentralize renewable energy production, and incorporate nature-based solutions to address the dual threats of climate change and biodiversity loss.

These were not isolated initiatives. They signaled a growing urban movement toward sustainability, inclusivity, and resilience. The arrival of COVID-19 has made it abundantly clear that these efforts need to scale up, and quickly. The economic stimulus and recovery packages that governments around the world are now mobilizing, amounting to trillions of dollars, can either reinforce the old, polluting patterns of development or catalyze a green transformation.

UN Secretary-General António Guterres underscored this point at the launch of a policy brief on COVID-19 and urban spaces. “As we respond to the pandemic and work towards recovery, we look to our cities as hubs of community, human innovation, and ingenuity,” he said. His call to action is a timely reminder that the road to recovery is not just about rebuilding what was lost but about reimagining what is possible.

The choices made by urban leaders today will determine the health, safety, and prosperity of billions in the years to come. Prioritizing sustainable infrastructure, investing in green jobs, expanding public transport, and fostering inclusive urban planning are no longer optional. They are essential steps if cities are to withstand future shocks, whether those come from pandemics, climate disasters, or economic crises.

The pandemic has shown us how quickly societies can adapt when necessary. Remote working, car-free streets, and cleaner air became visible shifts almost overnight. The question now is whether we have the political will to make these changes permanent and embed them into the DNA of urban governance.

The path forward is clear. Cities must be at the center of a green recovery. They are where innovation thrives, where climate solutions are tested, and where resilience can be built at scale. By acting decisively today, urban leaders can shape a future that is not only safer but also more sustainable and equitable for generations to come.