https://www.vox.com/2019/7/4/20681331/climate-change-solutions-trees-deforestation-reforestation
https://www.treepeople.org/tree-benefits
https://trees.org/post/10-ways-trees-help/
https://blog.constellation.com/2016/04/01/home-energy-conservation-shade-tree-landscaping/
http://theconversation.com/can-trees-really-cool-our-cities-down-44099
https://www.greenblue.com/na/trees-as-sound-barriers/
https://www.dec.ny.gov/lands/90720.html
https://www.sandiego.gov/trees/benefits-of-trees
https://projects.ncsu.edu/project/treesofstrength/benefits.htm
https://www.apnews.com/8ac33686b64a4fbc991997a72683b1c5
https://www.sciencedirect.com/science/article/abs/pii/S0341816214001283
https://www.hunker.com/13429149/how-to-calculate-trees-per-acre
https://www.sciencedaily.com/releases/2011/08/110822091859.htm
https://www.fs.usda.gov/Internet/FSE_DOCUMENTS/stelprdb5269813.pdf