Sustainability is a movement that’s changing the way people think about the planet. It’s changing the way people live. And it’s happening all across Arizona. Sustainability is a way of using Earth's resources today in a way that protects them for the next generation. It’s a movement of the people. Few places in Arizona illustrate the principles of sustainability like the Quarter Circle U Ranch outside Apache Junction, where energy, land and water are used in a way that protects them for the next generation. The ranch’s collection of solar panels and 30 golf-cart batteries, which soak up electricity from the panels, power everything at the ranch, even the air-conditioning. .