How different news stories are presented by various news sources is rarely uniform. Different news outlets have different takes, or present different aspects of a story or highlight different facts about it, and this shapes what consumers of that news take away from the story. Add the internet and social media algorithms and you wind up with what are referred to as "filter bubbles" where, depending on which news sources you pay attention to, different people develop fundamentally different understandings of the same events or stories. We learn about AllSides Technologies, whose team uses various methods to estimate the perceived political bias of news outlets and then presents different versions of similar news stories from sources they’ve rated as being on the political right, left, or center, with a mission to show readers news outside their filter bubble and illustrate media bias.