print email comment close Lost at Sea: The Search for Longitude URL: http://www.pbs.org/wgbh/nova/longitude/ Description: This site is a companion to a Public Broadcasting Service (PBS) NOVA program that tells the story of how British clockmaker John Harrison solved the problem of calculating longitude and thus "discovered the key to navigating on the open seas." The site provides a program transcript, information about secrets of ancient navigation and the current Global Positioning System (GPS), and thoughts from scientists about recent scientific challenges. Also includes a teacher's guide. Publisher: WGBH; PBS Online Extra Keywords Dava Sobel Royal Observatory Greenwich Library of Congress Subject Headings: Global Positioning System Longitude Navigation LII Database Information: Record 12310 created by Sybil Finemel on 07/17/2004 Last modification on 07/27/2004 Published: 07/17/2004   Funding agency: California State Library LII Item ID: http://lii.org/cs/lii/view/item/12310