Geographic Technology
GPS End-Of-Week Rollover
Some GPS units will cease to operate on August 22, 1999.An Interview with a GIS Specialist Specialist Steve Maskol discusses his city's implementation of GIS.
An Introduction to GIS
The fictional River City decides to begin a GIS program. Your guide provides an overview of Geographic Information Systems and how it works.Landsat
Learn about the famous satellites which cover the world.Microsoft's Terraserver
See satellite photos of your house on the Internet's largest database.President Turns Off GPS Selective Availability
On May 1, 2000, President Clinton ordered Selective Availability discontinued, making GPS much more accurate for civilian and commercial users.Smile, you're on satellite imagery!
Satellites are always overhead, gathering data about our planet. Learn how to find incredible images of the earth online.Using GPS
Read about my adventure with a handheld GPS unit.Where am I?
Thanks to the Global Positioning System (GPS), you can keep track of exactly where you are on the planet. Read this feature to find out how GPS works and how it will help make your commute a bit easier.
