Second-by-second information sharing among households, utilities and even individual appliances may revolutionize the grids that distribute electricity throughout the country. Panelists explore how to make the grid more resilient and nimble, saving energy and forestalling blackouts.

Over the next generation, water supplies in the United States will face increasing pressure. Panelists lay out the challenges, which range from leaky municipal water systems to growing explore technology to ensure that fresh water remains safe and plentiful.

It's been half a year since the
I-35W bridge in Minneapolis collapsed. In that time, there has been fresh debate over how to fix America's bridges and roads. Panelists discuss state-of-the-art building technology and how such ideas should be applied to dams, buildings, roads and more.