Author and conservationist William deBuys argued in a recent Los Angeles Times Op-Ed that the future of Phoenix is unsustainable, largely because of the impact of climate change. deBuys and Grady Gammage, attorney and Morrison Institute Senior Research Fellow, debated whether Phoenix has done enough to prepare for a hotter future. Gammage said Phoenix is far ahead of other western cities like Los Angeles and Denver, particularly in terms of planning related to water supply.