Tanzania
Episode: 4x01 | Airdate: Apr 14, 2009
Episodes
Seoul, South Korea
Episode: 4x02 | Airdate: Apr 21, 2009
The Outback
Episode: 4x03 | Airdate: Apr 28, 2009
Appalachia
Episode: 4x04 | Airdate: May 5, 2009
Eastern Australia
Episode: 4x05 | Airdate: May 12, 2009
Singapore
Episode: 4x06 | Airdate: May 19, 2009
Texas
Episode: 4x07 | Airdate: May 26, 2009
Nicaragua
Episode: 4x08 | Airdate: Jun 2, 2009
Puerto Rico
Episode: 4x09 | Airdate: Jun 9, 2009
Survival Special
Episode: 4x10 | Airdate: Jun 16, 2009