1. Africa

In Africa, Gordon takes to the skies to see how a growing human population is affecting wildlife, from flamingos and elephants in Kenya to humpback whales off the coast of Gabon.

2. South America

In South America, Gordon flies over the Amazon in search of illegal loggers, and in the Andes he meets conservationists searching for new species before their habitat is destroyed.

4. SE Asia

Gordon Buchanan discovers how eyes in the sky are helping protect endangered orangutans, elephants and people in south east Asia, where booming economies are taking a toll on the natural world.