Gaia helps capture a rogue crocodile before travelling to Monteverde Cloud Forest and scaling a giant tree with scientists who preserve life forms. Then she meets President Luis Guillermo Solis.
Emmy-nominated world tour with actress Ellen Page and Vic
Guy Martin sets off on a 1000-mile motorbike trip across India
Levison Wood sets out on a nine-month walk along the River Nile
The journey doesn't end there...