Good morning, class. Today we're discussing the impact of urban green spaces on mental health. A recent study followed 1,000 residents over five years. Those who visited parks at least once a week reported 20% lower stress levels. Interestingly, the size of the park didn't matter, but the presence of water features, like ponds or fountains, significantly increased the calming effect. Also, people who gardened in community plots showed improved mood compared to those who only walked. So, while any green space helps, active engagement and water elements seem to be key.