Update. Another good example of reusing older #data for a new purpose. Aerial mapping photos of Antarctica taken by the Navy in the 1960s, and then lost, help reconstruct the collapse of glaciers.
* primary source
https://www.nature.com/articles/s41467-025-59293-1
* summary
https://scitechdaily.com/scientists-just-turned-dusty-navy-photos-into-a-climate-time-bomb/