Be careful that when you try to read opposing viewpoints that you're not reading crazy conspiracy theories. Fox is so overtly biased and with editorials masquerading as news stories, that you can't take all of it seriously and you have to sift through it very carefully. You don't balance a slight liberal bent with an overt conservative approach that is constantly on the attack. You cannot put Fox as an equal balance to the BBC for example. But Fox is sane here compared to the wackos like Breitbart or Infowars or World Net Daily.
Sure, listen to different views, but do not give them all equal weight! It is very useful to know what some of the extremist views are, and useful to know if those views are gaining popularity, but you should not treat those views as part of the balance with the truth residing at the average of it all.
A good viewpoint to get is from foreign or international sources. BBC, AFP, Al Jazeera, The Economist, etc.