Began at 7:00 PM - Washington Week with Gwen Ifill
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Explorer Tim Jarvis must traverse the mountains of South Georgia to complete Shackleton's journey.
Racing skipper Paul Larsen attempts to navigate the Southern Ocean with only a sextant and compass.
George tries to find Chinstrap penguins in the Antarctic and must stay in a cave during a blizzard.
Polar explorer Tim Jarvis examines Sir Ernest Shackleton's boat journey across the Southern Ocean.