A large part of NASA's mission is to observe and study the Earth. Over the years NASA has taken some beautiful photographs of Earth. Here are just a few.

Change which icons appear in the Windows 7 Notification area and decide how those icons behave when they are display in that area.

In this Quick Tip, Mark Kaelin shows you how to take ownership of a file or folder in Microsoft Windows 7.

The wildlife found in park systems around the world can be truly amazing. Here are just a few images from the animal kingdom that can serve as interesting desktop wallpaper.

Use the Disk Management Tool in Microsoft Windows 7 to add a partition to a hard disk volume so you can create a new logical drive.

Use the Disk Management Tool in Microsoft Windows 7 to shrink a hard disk volume to create room so you can add a new partition.

Mark's photo scrap book 8

The Winter Solstice is approaching, which means winter, which means cold weather and long nights. And for the kid in all of us it brings up memories of the North Pole. Imagine going to work under the colorful aurora borealis (northern lights).

Many of the most fascinating places on the Earth lie beneath the surface of the planet's oceans, which makes for colorful photography and desktop wallpaper.

Some of the most interesting images available on the NASA.gov website are artist renderings of space exploration concepts. Here are a few of my favorites.