Tokyo
https://www.nationalgeographic.com/…/see-sustainable-futu…/… // By 2050 the world’s population is expected to reach 9.8 billion. Nearly 70 percent of this booming population—6.7 billion people— is projected to live in urban areas. Now, Greater Tokyo’s more than 37 million residents make it the world’s most populous metropolitan area. And it is also safest, wealthiest, cleanest and most creative city of this moment :) About this website NATIONALGEOGRAPHIC.COM This is what the future’s sustainable cities could look like