The author points to a number of studies that have shown that children show significant psychological and physiological improvement in terms of their health and well being when they interact with plants and trees. Specifically, the research indicates that children function better cognitively and emotionally in green environments and have more creative play in green areas. Also, he quotes a major public health report that investigated the association between green spaces and mental health concluded that “access to nature can significantly contribute to our mental capital and wellbeing”.