Here's a subset of my "daily" bookmark folder that at least attempts to do this for me when combined with honestly too heavy reddit/facebook usage:
* http://news.ycombinator.com/
* https://www.allsides.com/unbiased-balanced-news
Are some of them controversial? Of course, but that's the point. The wildly authoritarian left leaning sites that comprise big tech as a whole represent a single filter bubble. Staying in any particular bubble (right wing ones exist too) is a great way to turn yourself into a useful idiot/cultists/NPC.
Because the difficulty of tuning into a site that only leans in one direction isn't that you'll get biased news coverage, but whole entire stories are completely left out if they're bad for that side, and stories that are eventually found to be wildly incorrect, or even completely false issue only the quietest of correction edits while the untrue memes repeat ad infinite, but sites that lean the other way will ruthlessly correct their opponents.
The most important things to be reading are the things that are never talked about in your bias-confirming sources of infotainment.
tl;dr: filter bubbles bad, they'll turn you into a cultist