We search the internet for sources and explicitly prioritize websites that have been identified by educators that are trustworthy and we exclude sources from websites that are known to include bias (e.g. Reddit), however, different teachers might have different opinions on what is credible (e.g Wikipedia) and in that case we give the option to edit the sources. To edit sources, in the Adapted Reading Passage section, click "Show Sources", and click "Edit Sources and Regenerate".