What makes a "good news source" good?

http://www.cnn.com/2015/01/09/europe/charlie-hebdo-paris-shooting/index.html

   CNN is a reliable news source because it uses facts and reliable sources. CNN refrains from putting their own news reporter's and journalist's opinions to their work for the public eye. CNN uses people that were there at the time of an incident, and saw what was happened. This news source makes sure to only put out valid information that can be proved to be true. They prove the news in their articles with the facts presented.      This news cite uses all detail and provides and allows for the public to have a very extensive look into the news spoken/written about. It is important for the news to give valid evidence, because once they use lies or opinions, the public may start to doubt the news source's validity. I believe that CNN is a very reliable news source.