Some information sources represent propaganda.
If the information is presented as fact, check to see if there are references to verify the accuracy of the information. The following excerpt from an article in the New York Times, represents the author's opinion. This example cites a study that is detailed in a scholarly journal. Judging by the events thus far, the aftermath of the incident at Three Mile Island may be more harrowing than the accident itself. Congress apparently is going to conduct a full-scale investigation into causes and effects of the accident.