Today we're discussing the impact of urban green spaces. A recent study in Melbourne found that adding parks and community gardens can reduce local temperatures by up to 2 degrees Celsius during summer heatwaves. Interestingly, the effect was strongest in neighborhoods with older trees, not just grass areas. The researchers also noted that residents near these green spaces reported improved mental well-being, though they emphasized that this was based on self-reporting, not clinical measures. However, the study did not find a significant reduction in air pollution levels, contrary to what many assume.