Green roofs can be easily placed in Downtown Los Angeles with all its tall buildings and even gardens can be grown in open landscapes. There are so many tall buildings here and during the summer it must get hot. When it's hot, you usually turn on the AC but with green roofs, you won't have to because they will reduce high temperatures! Green roofs can be placed on top of buildings that have enough money and people to care for them. By doing so, they will save money on electric bills and can use the money for anything else they need. It can be applied to Downtown Los Angeles once we set the layers correctly and plant the seeds to grow. We could begin planting green roofs today and it would make a huge difference if there were many (with one there wouldn't be a huge difference, probably about a 2% difference).