Sources and Fact-Checking
Source standards
For science, health, nutrition, and history, we prioritize government health agencies, international public-health bodies, universities, museums, scientific organizations, and established reference publishers.
How we check claims
Editors compare the precise wording of a claim against reliable sources, prefer primary or authoritative material, and avoid overstating what evidence shows.
References
Where a question benefits from direct support, the result review includes a source link beside the explanation.