http://adf.ly/1SZdI2, http://adf.ly/1XIsTW, http://www.ctvviet.com, http://www.nhac24.com <br />CNN Student News is kicking off its 2016 U.S. presidential election coverage today. We're having a look at who the candidates are, how they're polling at this point, and what their convention highlights looked like over the summer. Also featured this Friday: the possible identification of an Earth-like planet and the environmental concerns around America's largest subtropical wilderness.
