'Secrets of the Viking Sword' (2012) full program. NOVA uses cutting-edge (pun intended) science and old-fashioned detective work to reconstruct the "Ulfberht" sword that was so far advanced for its time.

'Secrets of the Viking Sword' (2012) full program. NOVA uses cutting-edge (pun intended) science and old-fashioned detective work to reconstruct the "Ulfberht" sword that was so far advanced for its time. Source: http://www.youtube.com/watch?v=8c5ybBqeY7M

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