[header] How to save trees [title] Learn how trees affect your home. [step] Aside from desert regions, most areas benefit from having plenty of large, shady trees in every neighborhood. They improve air quality, reduce erosion and absorb noise. 
Big trees protect cities from getting too hot by cooling the environment through shade and evaporation. Without trees, urban areas experience what's called a heat island effect, with streets and buildings retaining heat and forcing people to use extra power to cool their homes.