The Danes are so fiercely proud of their Viking past that they have built and sailed an exact replica of a long-boat. But when they excavated the remains of a huge Viking warship from the bottom of a fiord they also dug up a mystery. Where did it come from, and why was it deliberately sunk?
Plus, next week the World
Population Summit starts in Delhi - what will the world be like when ten billion of us are crowded in? With Howard Stableford, Kate Bellingham , Carmen Pryce and Judith Hann. Producer Bill Grist Editor Dana Purvis
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