I grew up in LA and still spend a lot of time camping in the southwest. I think I'm pretty familiar with what the natural environment would look like without ci

I grew up in LA and still spend a lot of time camping in the southwest. I think I'm pretty familiar with what the natural environment would look like without cities. It's not green. It's mostly dirt, peppered with scrub plants. You can get a pretty good idea what "LA or Vegas with natural green belts" would look like just by going outside the metro areas. I'm not saying it's bad - I love southwest desert - but natural desert "greenbelts" are probably not what you're picturing if you think "why don't we do Medellín here?"