To download this image and make it your desktop wallpaper:

PC Users:
Right click on the image below and the choose "Set as wallpaper" from the pop-up menu.

Mac Users:
Click on the image and hold. After a few seconds a menu will appear.
Select “Download image to disk”
Save it to your desktop or a folder on your hard drive where you can find it.
Click on the Apple Menu and select "Appearance"
Click on the "Desktop" tab
Click on "Place Picture" and "Position Automatically"

And enjoy!