http://adf.ly/1SZdI2, http://adf.ly/1XIsTW, http://www.ctvviet.com, http://www.nhac24.com <br />A retrospective on U.S. presidential debates is featured today on CNN Student News! Walk back through decades of televised face-offs and find out what influenced voters. We're also reporting on a state of emergency in North Carolina, a study that detected a heavy metal in much of America's drinking water, and a look at what could be one of the biggest cybersecurity hacks ever.
