What does it mean for a city to disappear—or to be reborn? In this episode, we explore the evolving nature of cities through the lens of Detroit’s bankruptcy, small-town dissolutions in the U.S. and Japan, and the emergence of Elon Musk’s Starbase. From financial collapse to corporate-led city-building, we look at how governance, sustainability, and even the definition of “a city” are being reimagined. With humanity’s eyes on Mars, are we already rehearsing what future urban life could look like?