Girls screamed as they tried to get a look at John Lennon, Paul McCartney, George Harrison and Ringo Starr.

VOA: special.2010.07.30

While scientists were studying the stars and moon to solve the longitude problem, a man named John Harrison was working on another project.

VOA: special.2010.07.14

John Harrison's clocks can be seen today at the Old Royal Observatory in Greenwich,England.

VOA: special.2010.07.14

Tim Harrison, from John Lewis, said Oakgate's plans for the Monks Cross centre were ideal.

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John Harrison was a working class joiner who developed an obsession for creating high-precision clocks.

BBC: Longitude clock comes alive

John Harrison, author of Low Cost Living, says that it's all about little steps.

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