Starting in 2017, the Knight Foundation and Gallup conducted research to try to understand the effect of reader bias on the reader's perception of news source bias. They created the NewsLens site to present news from a variety of sources without labeling where the article came from. Their research showed that those with more extreme political views tend to provide more biased ratings of news. NewsLens became generally available in 2020, with the goals of expanding on the research and helping the US public to read and share news with less bias. However, , the platform was closed.