Some time ago we featured a utility that allows you download lots of National Geographic desktop wallpapers with one click.
Well, that little utility has been updated, you can choose image sizes, and images are downloaded from both the National Geographic website and National Geographic Magazine.
Note: all the wallpaper images have a small National Geographic watermark on them. I don't find it obtrusive, but it's something to keep in mind in case you'd rather not have a watermark on your desktop wallpaper.
If you have a slow connection, you may be better off downloading some of the collections or individual wallpapers rather than all the wallpapers at one time.
Runs on Windows XP, Vista, Windows 7.
Vista and Windows 7 users should run the program as administrator (right click on the download program file and click "Run as Administrator".
More information and download link:
NatGeo Wallpaper Downloader: download over 5000 National Geographic wallpapers with a single click
NatGeo Wallpaper Download