Air date: 2014-01-26

Runtime: 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

Air date: 2014-02-02

Runtime: 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.