Who would have thought having trees, shrubs and other natural barriers between an airport and the people would reduce noise levels?
It's as if clear cutting was found not to work.
Who thinks that? People that have never studied noise abatement and think their cleverness is enough to allow them to intuit the science.
Trees and shrubs do very little. A thorough study from the state of Virginia showed
No matter how the sites were examined, there was no measurable difference in road noise. All differences at the more distant measurement locations were due simply to the distance effect rather than to any additional mitigating effects of trees, whether measured by planting density, age, height, or average tree diameter.