To offset filter bubbles and echo chambers, we must engage in critical thinking. Critical thinking, as defined by the Oxford English Dictionary, is "the objective, systematic, and rational analysis and evaluation of factual evidence in order to form a judgement on a subject, issue, etc." The resources listed on this page can help you improve your critical thinking skills.
There are five questions everyone should ask as part of evaluating online resources:
Source: Housand, Brian C. Fighting Fake News: Teaching Critical Thinking and Media Literacy in a Digital Age.
Source: League of Women Voters