With a population of about 6,000 people, Sun City Shadow Hills is larger than many small towns. Its 55-and-over residents flit from single-family homes to golf courses to pickleball and tennis courts, some driving golf carts alongside cars on the gated community’s rolling streets. Dogs abound. Joggers wave to one another in morning sunlight.  Much of the community is covered in lush green grass, particularly around the regulation golf course. But increasing swaths of it — both yards and public spaces — have been converted back into the sand, gravel and flowering bushes that naturally carpet the Sonoran Desert.     Read the article………..