See, what most news channels do (TV, newspaper, web) is to strive to alarm you. NPR stories about central american coups, financial press predictions of doom with taxation proposals, valley press warning of the upcoming total shortage of venture capitol, bloggers warning of the impending death of microsoft, prince predicting (hoping?) for the death of the internet itself.
When we talk about bias, we are more likely to think left-leaning vs right-leaning vs libertarian. Let me suggest another way of looking at this.
Are you looking for a source of news whose thrust is to alarm you? I claim that is the common bias shared by most news sources.
So I suggest this simple experiment. As you listen to a newscast/blogger podcast/tv broadcast or read a blogger post/newspaper/news.google.com/news.combinator.com ask yourself "is this story informing or alarming".
Then check out utne.com or the Christian Science Monitor.
Better yet is to read several, or none at all.
Who is it that said "if the information is important, it will find me"?