01. Rivers
No details
30min
June 5, 2007
02. Deserts
No details
30min
June 12, 2007
03. Seas
No details
30min
June 19, 2007
04. Air
No details
30min
June 26, 2007
05. Wetlands
No details
30min
July 3, 2007
06. Grassland
No details
30min
July 10, 2007
08. Frozen Seas
No details
30min
July 24, 2007
09. Cities
No details
30min
July 31, 2007
10. Coast
No details
30min
August 14, 2007
11. Light and Dark
No details
30min
August 21, 2007
12. Tundra
No details
30min
August 28, 2007
13. Jungles
No details
30min
September 18, 2007