In Toronto, researchers recently found that people living on tree-lined streets reported health benefits equivalent to being seven years younger or receiving a $10,000 salary rise. As well as studies revealing benefits from everything from improved mental health to reduced asthma, US scientists have even identified a correlation between an increase in tree-canopy cover and fewer low-weight births. And economic studies show what any estate agent swears by: leafy streets sell houses. Street trees in Portland, Oregon, yielded an increase in house prices of $1.35bn, potentially increasing annual property tax revenues by $15.3m.

Source: Introducing ‘treeconomics’: how street trees can save our cities | Cities | The Guardian