Bad news sells. Newspapers, NPR, TV shows make the outlook seem bleak. Depressing.
Slashdot released an article tagging feature a few months ago, which causes user-generated tags to show up below the article summaries on the main page. The tags typically give you an idea of the sentiment surrounding the article. Some of the tags are positive.
Say you wanted to only focus on good news that comes across Slashdot. You could just browse the tags you consider positive, happy, humorous. Here are some I like: aboutdamntime, abouttime, funny, and especially suddenoutbreakofcommonsense. Also check out the entire list of recent tags.
Enjoy your good news.