I've lived in the Las Vegas area my entire life. I'm so glad they're doing this. Some areas of town have very little green space, especially since grass has been outlawed. Trees are a net positive, even if it isn't a silver bullet solution. I do miss the grass though, everyone in the neighborhood watering their grass at night really cooled things down but the cost is too high considering how much water is used. Trees can keep the asphalt and concrete from becoming frying pans.