Howstuffworks "Geography of Antarctica Videos"

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Nature's Most Amazing Events: Kalahari Survivors

Nature's Most Amazing Events: Kalahari Survivors (1:47)

Nature's Most Amazing Events: Kalahari Fires

Nature's Most Amazing Events: Kalahari Fires (1:17)

Nature's Most Amazing Events: Harvester Termites

Nature's Most Amazing Events: Harvester Termites (0:56)

Nature's Most Amazing Events: Desert Scavengers

Nature's Most Amazing Events: Desert Scavengers (2:08)

G Word: Tidal Power

G Word: Tidal Power (2:39)