In today's lecture, we'll discuss the impact of urban green spaces on mental health. Recent studies show that access to parks and gardens can significantly reduce stress levels. However, the key factor isn't just the size of the green area, but its proximity to residential zones. For example, a small community garden within 200 meters of homes has a greater positive effect than a large distant park. Additionally, the presence of water features, like ponds or fountains, enhances the calming effect. Interestingly, the study found that biodiversity, such as variety of plant species, also plays a role, but only when combined with quietness. Therefore, urban planners should prioritize creating small, quiet, and biodiverse green spaces near housing.