We use technology to rate how informative an article likely is: links & quotes analysis, lack of opinion in writing tone, author's topical expertise based on historical writing and site historical reputation. The result is you can find good articles in hundreds of sources without having to brand an entire source (Fox, NYT, CNN etc) as good or bad. And by curating a few highly rated stories across the political spectrum on each topic you see different framings of a story quickly so you get closer to the unbiased story.
More here if you're curious: https://thefactual.com/how-it-works