Now you can have the best National Geographic pictures as the wallpaper of your computer. In their official site they have a wallpaper section, where you can download some of the most amazing pictures of animals, nature and culture. All wallpaper have a size of 1024 x 768 pixels, come with the name of the photographers and a little description of the photo itself. It is a great opportunity to have a wonderful nature window on your computer.
Link: Download wallpaper