In today's lecture, we'll discuss the impact of urban green spaces. Recent studies show that access to parks can reduce stress levels by up to 20%. However, the key factor is not just the presence of green areas, but their quality. For instance, well-maintained paths and seating encourage longer visits, which correlate with greater mental health benefits. Interestingly, the size of the park matters less than its design. A small, well-designed garden can be more effective than a large, poorly maintained one. So, city planners should focus on improving existing spaces rather than just creating new ones.