Your article, "More trees mean less crime, study says," (May 20) was most interesting. A 19th century study revealed that people who lived on tree-lined streets had 50 percent less instance of contracting contagious diseases than those living on non-tree-lined streets. This was the impetus behind the great tree planting efforts of that time.
All of this points in one direction — trees have almost boundless benefits for human society and we need many more of them.
