Ozone: The Fault Is Not in Our Trees, but in Ourselves

A new study reveals that trees, long thought to be major emitters of ozone-forming compounds, are not the primary culprits behind urban ozone pollution. Instead, human activities—such as industrial processes and vehicle emissions—play a far larger role. This finding challenges current air quality models and suggests that efforts to reduce ozone should focus more on anthropogenic sources rather than on managing natural vegetation.