As cities face the challenges of climate change, sustainability is becoming a top priority. The Ellen MacArthur Foundation has identified six strategies for creating circular cities, including redeveloping brownfield sites and using low-impact materials. In Tokyo Bay, innovative projects are being developed to promote regenerative design, such as cultivating microalgae and producing hydrogen from seawater. Meanwhile, in New York City, initiatives like the Billion Oyster Project and Brooklyn Grange aim to reduce erosion and flood risk through urban rewilding. In Asia, the concept of "sponge cities" is gaining traction, prioritizing green spaces to collect rainwater.

Source: https://www.wired.com/story/heres-what-the-sustainable-cities-of-tomorrow-could-look-like/