In today's lecture, we'll discuss the impact of urban green spaces on mental health. A recent study conducted in Melbourne followed 500 residents over five years. The researchers found that people living within 300 meters of a park reported significantly lower stress levels. Interestingly, the size of the green space mattered more than its frequency of use. Small community gardens had a minimal effect, while large tree-lined parks reduced anxiety by up to 20%. The lead researcher, Dr. Emily Watson, emphasized that planning policies should prioritize larger, connected green areas rather than many small ones.