In the podcast episode of 'My Wildest Prediction', Tom Goodwin interviews urban expert Greg Clark about the future of cities amid rising urbanization. Clark predicts that by 2080, the global population will exceed 10 billion, with 90% living in urban areas. He emphasizes the need for sustainable city planning to address challenges like inequality, environmental pollution, and food and housing crises. Clark advocates for integrating nature into urban design to create 'organic cities' that can better support human life.