Climate change is arguably the greatest challenge of our times, with COVID-19 further highlighting the need for a sustainable future. Despite the pandemic, urbanization is not slowing globally. Covering just 3% of the Earth’s surface, metropolitan systems are currently home to 55% of human beings and are expected to increase dramatically over the next 20 years. Cities are also responsible for about 60% of greenhouse gas emissions and 70% of solid waste, while absorbing around 70% of global energy. To fight climate change effectively, we ought to design more environmentally sustainable urban systems.
What are the goals of more sustainable cities? What are the key elements of a much needed urban transformation? What is the expected impact of Covid-19 on this transformation?