Africa: Patrick Aryee tracks down great white sharks, desert giraffes and one of the last 'tusker' elephants as he explores the challenges facing nature's giants. (3 of 3) [S,AD]
Australia and Asia: Patrick Aryee gets eye to eye with Komodo dragons, orangutans and giant pandas as he explores why these creatures all came to be supersized. (2 of 3) [S,AD]