SOURCES & EDITORIAL POLICY
We show what we consulted and how far it was verified.
Official information, academic research, field records, and project hypotheses are identified separately. Each substantive record includes its source, publication or review date, and current status.
EDITORIAL RULES
Facts, research, field records, and corrections
- Designation dates, place names, and statistics retain the date and source of verification.
- In vitro, animal, and human studies are identified together with the material tested.
- Photographs and interviews record authorship and the agreed scope of publication.
- Correction and review dates are updated when an error or material change is found.
- Concept images are labelled as illustrations and are not used as evidence of an official fact.