How Far Is It?
    Find out how far apart any two places are and see them on a map.
 
 

NOVA: Lost at Sea - The Search for Longitude
    Learn why the basis for navigating all depends on knowing what time it is.
 

All About GPS (Global Positioning System)
    Shockwave-animation enhanced tutorial presented by Trimble Navigation.
 

Degree Confluence Project
    The goal of the project is to visit each of the latitude and longitude integer degree
                                     intersections in the world, and to take pictures at each location. The pictures and
                                     stories will then be posted here.

Celestial Navigation
    Very comprehensive explanation of the art and science of sailing by the stars.
 

MapQuest
    Driving directions and maps.