Episode Six features George Stephenson, one of the many northern inventors who helped launch the Industrial Revolution. Melvyn Bragg believes the Industrial Revolution is the greatest Revolution the world has ever seen - and its heart lies in the North of England. In this programme he pays tribute to the men who nurtured that great revolution. The inventors and engineers - often from very humble beginnings - whose discoveries would shape the world to this day. One of the greatest was the north east's George Stephenson, whose Rocket locomotive heralded the age of the railways. The programme starts with the writer Frank Cottrell Boyce - who ( in collaboration with Danny Boyle ) put the Industrial Revolution centre stage at the 2012 Olympic opening ceremony. Melvyn met him at Rainhill near Liverpool where Rocket took part in a famous trial. Of course, Stephenson wasn't the only great inventor of the period - the great machines of the cotton industry can also be claimed by the north - the genius of Samuel Crompton and his Spinning Mule is celebrated. The façade of Sheffield Town Hall is emblazoned with scenes of industry, but why wonders Melvyn are the achievements of these great men not celebrated more? Why aren't they as much a part of our national mythology as Tudor Monarchs? Contributors Frank Cottrell Boyce Professor Hannah Barker, University of Manchester Professor Robert Colls, De Montfort University Matthew Watson, Bolton Museum Professor Richard Horrocks, University of Bolton Producer: Faith Lawrence.