If you're interested in the historical setting of Longitude (and why it's in Greenwich to begin with), I highly recommend Dava Sobel's _Longitude_: http://www.a

If you're interested in the historical setting of Longitude (and why it's in Greenwich to begin with), I highly recommend Dava Sobel's _Longitude_: http://www.amazon.com/Longitude-Genius-Greatest-Scientific-Problem/dp/080271529X/ http://www.amazon.com/Longitude-Genius-Greatest-Scientific-P...