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When a forest service researcher realized that the loss of 100 million trees infested by the emerald ash borer could present a unique opportunity to learn more about the value of trees, he probably didn’t expect to find such dramatic effects of treeless streets.
But in the neighborhoods hit by the beetle that kills ash trees, researchers noticed a stark rise in human mortality from cardiovascular and lower respiratory disease: there were 15,000 more deaths from cardiovascular disease, or 16.7 additional deaths per year per 100,000 adults, and 6,000 more deaths from lower respiratory disease than in unaffected areas, or 6.8 additional deaths per year per 100,000 adults.
But in the neighborhoods hit by the beetle that kills ash trees, researchers noticed a stark rise in human mortality from cardiovascular and lower respiratory disease: there were 15,000 more deaths from cardiovascular disease, or 16.7 additional deaths per year per 100,000 adults, and 6,000 more deaths from lower respiratory disease than in unaffected areas, or 6.8 additional deaths per year per 100,000 adults.
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