Exactly what I thought while reading that article. I can't imagine anyway you would be able to run a study and get meaningful results around this accounting for

Exactly what I thought while reading that article. I can't imagine anyway you would be able to run a study and get meaningful results around this accounting for a tonne of external variables. I expect wealthier people tend to live in nicer neighbourhoods that just tend to have more planting, those people are more likely to have better lives than poor people who happen to live in neighborhoods that can't afford to plant a lot of trees. In saying that, I'm still all for planting as many trees in cities as we can. This just seems like a flawed study