Study in Philadelphia links growth in tree canopy to decrease in human mortality — ScienceDaily Posted byor1an1fheargha11July 13, 2020Posted inUncategorizedTags:health Covid-19, tree planting, Trees, trillion tree campaign, urban, urban canopy https://www.sciencedaily.com/releases/2020/06/200616135820.htmShare this:TwitterFacebookLike this:Like Loading... Related