Glossary · also Creative Commons, CC BY, CC0
Licence
The terms under which a photo, recording, text or dataset may be reused.
Most material here is under a Creative Commons licence or in the public domain. CC0 and public domain need no credit; CC BY requires credit to the creator; CC BY-SA also requires that adaptations are shared under the same terms.
Because this site carries advertising, material under a non-commercial (NC) or no-derivatives (ND) licence is never displayed. Each photo and recording shows its creator and licence where it appears.
Related terms
- Source
- The dataset a value was taken from. Every fact on this site links to its source.