As of 2021, the cumulative effect of many different types of pollution is really showing itself on many different species of trees. The photographs below, taken in New England over the past year, demonstrate a significant decline in tree health in certain areas. A similar decline in tree health is evident in many other parts of the world as well. Thinning crowns, smaller leaves, less dense forest canopies, and dead trees (many of which were not that old) have been observed, especially along major roadways and highways. Decades of road salt application, excessive microwave and radiofrequency radiation, particulate pollution, natural gas leaks, and drought are probably all synergistic culprits in causing this decline.

How are the trees doing where you live?