This probably falls under the “obvious study conclusions” category. Plant trees in your urban area and they suck up pollution and lower asthma incidents. I’d be curious to see how much some indoor plants might help asthma inside the household.
Children who live in tree-lined streets have lower rates of asthma, a New York-based study suggests.
Columbia University researchers found that asthma rates among children aged four and five fell by 25% for every extra 343 trees per square kilometre.
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