From the Chhatrapati Shivaji Terminus in Mumbai, Dan Snow, Anita Rani and Robert Llewellyn explore the science behind the world's busiest railway. With John Sergeant reporting from across India.
Dan Snow
Anita Rani
Robert Llewellyn
John Sergeant
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Score: 8.0
Score: 8.0
Score: 7.6
Score: 8.5
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