Now new research has looked specifically at asthma and found that living in green neighborhoods protects children from developing the condition.

Since the pioneering work of architecture professor Roger Ulrich, who found that patients with a view of a natural scene recovered more quickly from surgery, research has shown that exposure to the natural environment is associated with a wide range of health benefits.

We have focused our work on asthma, and our research, published today, shows that children who live in greener neighbourhoods are less likely to develop it. Not all greenness was equally effective, however. If a child was exposed to a broader range of plants, they were even less likely to get asthma.