In today's lecture, we'll discuss the impact of urban green spaces on mental health. Recent studies have shown that access to parks and gardens can significantly reduce stress levels. However, the key factor isn't just the presence of green areas, but their quality and accessibility. For instance, a study in Melbourne found that residents living within 300 meters of a well-maintained park reported lower anxiety compared to those near poorly maintained ones. Interestingly, the size of the park mattered less than the variety of plants and seating areas. So, city planners should prioritize maintenance over expansion.