In the fight against heat, drought, forest fires and heavy rain, every little green counts. In this brand-new podcast interview, Flora and Ulrich talk to German landscape architect and author Tim Kaysers about his vision of a world that is made up of green cities: human and climate-friendly spaces filled with plants and trees, and free from cars and concrete. With the irreversible effects of climate crisis an ever-present threat to the future of mankind, Tim explains why we must act quickly to make this vision a reality. We find out why plants are so crucial, and the practical steps involved in greening our cities - will it take a bottom-up, or top-down approach, or both? And what challenges will there be to changing people's mentality in our technology-focused world, where convenience and speed rule the day?