Science Apr 14 How drinking water pipes can also deliver electric power Hydroelectricity -- using the flow of water to generate power -- has long been a small but key source of renewable energy. How can cities around the country better harness that potential? A startup in Portland, Oregon, has developed a…
World Apr 14 Senators reach bipartisan agreement on Iran oversight bill Senators wrapped up a deal on a bill that would enable Congress to weigh in on a nuclear agreement with Iran. The White House suggested that under the new revision, the president's veto threat might go away. Meanwhile, Iran's foreign…
Episode Apr 13 PBS NewsHour full episode April 13, 2015 Tonight on the program, we examine the race for 2016, as Hillary Clinton and Marco Rubio throw their hats into the presidential ring. Also: Iraq's prime minister to ask U.S. for more support against Islamic State group, a cement alternative…