The study used a computer model to predict how cities might grow in the future. They focused on Thessaloniki in Greece, where the city has been spreading out more. The model looked at different factors like population and environment to make its predictions. They tested two scenarios: one where the city keeps growing like it has been, and one where growth is limited. The results showed that if growth continues as it has been, the city will spread out even more. But if growth is limited, the city will expand less and protect important areas like farmland.