The Volga Trade Route
Clip: Season 40 Episode 6 | 2m 58s
The Vikings didn’t invent crucible steel, so where did it come from? Many experts believe that the Volga trade route supplied Vikings with prized crucible steel from the Middle East, where people were more practiced in the art of forging it.
Aired: 02/07/13 |
Earth from Space Preview
Preview: S40 Ep6 | 50s
The Looming Satellite Gap
Clip: S40 Ep6 | 1m 51s
When Hurricane Sandy Went Rogue
Clip: S40 Ep6 | 2m 6s
Asteroid: Doomsday or Payday?
S40 Ep24 | 53m 49s | WETA Passport
At the Edge of Space
S40 Ep23 | 52m 52s | WETA Passport
S40 Ep14 | 53m 10s | WETA Passport
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