1. River of Monsters

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. 26 January 2014. 44 min

The second largest river on Earth rises as a brook in the north of Zambia and provides a stage for one of the world's biggest mammal migrations

2. King Kong's Lair

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. 2 February 2014. 44 min

Humanity's closest relatives can be found hidden deep inside the dense jungles of the Congo, home to three of Earth's four great ape species.