Longitude by Dava Sobel about John Harrison

This is the story of how John Harrison solved the greatest scientific problem of his time, how to find longitude. His clocks are works of genius and artistry and he was truly an amazing person. Yes, I have read this book, I really enjoyed it and learned an enormous amount about the struggles he went through and the politics of the time.  It felt like an extension of the program on the ABC called Longitude.