Where the facts come from
Sources
We checked the wording of each claim against a cached copy of these pages on 14 November 2026. Links go to the live pages, which can change; if a date or a display caption has moved on, the fact-check log will need a fresh pass.
USGS, What Is a Desert? (Deserts: Geology and Resources)
https://pubs.usgs.gov/gip/deserts/what/
Checked 14 November 2026. Short label on the site: USGS.
USGS, Types of Deserts
https://pubs.usgs.gov/gip/deserts/types/
Checked 14 November 2026. Short label on the site: USGS.
USGS, Desert Features
https://pubs.usgs.gov/gip/deserts/features/
Checked 14 November 2026. Short label on the site: USGS.
USGS, Desert Features (sand cover) / Geology and Resources
https://pubs.usgs.gov/gip/deserts/features/
Checked 14 November 2026. Short label on the site: USGS.
USGS, Deserts (Land Management Research Program)
https://www.usgs.gov/programs/land-management-research-program/deserts
Checked 14 November 2026. Short label on the site: USGS.
Met Office, Climate zones
https://weather.metoffice.gov.uk/climate/climate-explained/climate-zones
Checked 14 November 2026. Short label on the site: Met Office.
NASA Earth Observatory, Looking Down on the Andes
https://science.nasa.gov/earth/earth-observatory/looking-down-on-the-andes-151670/
Checked 14 November 2026. Short label on the site: NASA.
British Antarctic Survey, Antarctic factsheet & geographical statistics
https://www.bas.ac.uk/about/education-and-schools/antarctic-factsheet/
Checked 14 November 2026. Short label on the site: British Antarctic Survey.
Encyclopaedia Britannica, Desert
https://www.britannica.com/science/desert
Checked 14 November 2026. Short label on the site: Britannica.
This site is independent. It is not an official publication of any of the organisations named above.