Environmental Health: Trends in Mental Health and Green Space Name Institution Introduction Data from WHO (World Health Organization) and World Bank indicates that in 2006, mental health disorders constituted 10% of the world burden of disease. Take for instant, depression depletes Australian economy AUD$3.3 billion annually due to lost productivity. It has also been estimated that by 2020, mental health disorders may rise to 15% of the global burden of diseases and that depression alone will comprise one of the worst health problems globally (Maller, 2006). There is growing evidence that high quality green space has preventative health value. Such green space includes; sport fields, parks and reserves, riparian areas like river banks and streams, trails and green ways, street trees, nature conservation areas or even