What impact does the United States' energy production have on water supplies? What can the federal government do to help solve water supply issues? During today's OnPoint, Susan Marks, author of the new book "Aqua Shock: The Water Crisis in America," explains how energy demand and water supply issues intersect. She discusses local and federal action to minimize water supply issues. Marks also explains how expanding the production of alternatives and renewables will affect the nation's water supply.