tall skyscrapers and underground infrastructure

make it difficult for trees to grow In modern day Hong Kong, tall skyscrapers and underground infrastructure make it difficult for trees to grow. This contributes to the city’s
dangerously poor air quality,which can cause bronchitis and diminished lung function.Trees affect our mental health as well.Research indicates that the presence of green foliage increases attention spans and decreases stress levels.It’s even been shown that hospital patients with views of brick walls recover more slowly than those with views of trees.Fortunately, many cities are full of views like this—
and that’s no accident.As early as the 18th century,city planners began to embrace the importance of urban trees.