As the planet warms, our cities are heating up even faster, and it is especially true for desert cities. Solving heat, pollution and water problems will be key to the future of our growing cities. What is the role of technology, data and community involvement in solving these problems? Arizona State University has been a leader in looking for these solutions and Dr. Mark Bernstein highlights some of the opportunities. He is joined on stage by a team of middle-school students who are working to solving water problems. From GreenBiz 20.