When it comes down to basic facts, very little in the way of debate can help. It simply comes down to what sources you believe.
I'd have to say, yes and no to that statement. Some sources of information are indeed terrible. Media reports of the latest and greatest scientific 'discoveries', health research, or political situations tend to be overly simplistic, and are usually biased toward confirming beliefs that people already hold. Often, controversial topics are completely ignored despite their validity, and 'facts' that are quite dubious are reported because of shock value, or they fit in with the prevailing viewpoints we see culturally. Scientific knowledge that is accepted by researchers can be shown in a light that makes it appear to be very controversial to the public at large.
Debate can be helpful. When people are communicating about any topic, differing viewpoints and different sources of information can be discussed. More information can't hurt, as long as people have the tools to sort the good sources from the bad.
For the average person, asking 'why is this news?' and critically examining the facts themselves (where possible) is probably the most helpful way to sort fact from fiction, or fact from someones questionable hypothesis. For a person that does not have a background in the topic of their interest, or access to original research, there is very likely someone with a blog with that background that dissects the issue in a way that anyone can understand.
So how do you choose your sources?
Do you look at what the established experts in their fields say?
Do you specifically look at the contrarian view points?
Do you always insist on being able to reproduce results?
or Do you look for sources who say what it is you want to believe?
When it comes the "current scientific viewpoint," similar issues are involved.
Who do you trust? Why do you trust them?
Science affects policy in modern society, so I think everyone needs some good ways to evaluate scientific sources, and sources that report science.
(From a science background): A good source of information is usually complex.
(There should be an introduction to the topic. How the information was gathered and how the data was treated should be clearly stated. The data must be reproducible. There should be a detailed discussion of what the information means and how and why it is the same or different from the established 'facts'. The limitations of the research should be detailed).
That isn't to say it must be hard to understand. But, if something is too simplistic, or concludes that a finding indicate something it actually doesn't, or makes broad over-generalizations from very specific findings, then it should probably be taken with more than a grain of salt. Nothing is ever entirely certain, but if something is just bad research, the best a person can say is 'maybe its true'.