Lost at Sea: The Search for Longitude

Corresponding to the PBS NOVA television program, this site covers the story of how humans developed a method for finding our way around the globe. It discusses today's greatest scientific challenges, explores GPS and how it works, and describes how ancient navigators found their way without latitude and longitude. There is an online activity where students find latitude and longitude using time and locations, as well as an activity exploring GPS. A teacher's guide offers ideas for viewing and activities for the classroom, as well as additional resources. The accompanying video is available to order.