We all know it, but just in case you didn’t… Google has a huge liberal bias. The next time you are looking for something, try the same search in multiple search engines and you’ll be surprised by the vastly different results you get.

Nearly all (86 percent) of the stories came from just 20 sources and of them, 62 percent were considered to be left-leaning.

The research sheds new light on the unprecedented power the search engine has in influencing the external traffic to news sites, a hot topic in the worlds of media and politics given Facebook’s recently reduced output.

For example, the researchers found that CNN got a 24 percent bump in traffic as a result of having its stories featured in the ‘Top Stories’ box.

The most featured sources, in order, were CNN, The New York Times, The Washington Post, Fox News, BBC, USA Today, LA Times, The Guardian, Politico, ABC News, CBS News, NPR, NBC News, CNBC, Reuters, Huffington Post, The Verge, Al Jazeera, The Hill and People.

For some stories there was a shortage of sources but a search for Rex Tillerson, the former Secretary of State, turfed up stories from 38 sources.

Despite the plethora of sources, 75 percent of the promoted stories about Tillerson came from The New York Times and CNN, the researchers found.