Sezon 4
Bölümler
1 The Skelligs of Ireland 28 Ara 2007 
2 Venetian Canals 8 Eyl 2008 
3 Japanese Garden 9 Eyl 2008 
4 High Desert Arches 10 Eyl 2008 
5 Midnight Sun of Svalbard 11 Eyl 2008 
6 Vancouver Inside Passage 12 Eyl 2008 
7 Great Barrier Reef 20 Oca 2009 
8 Haleakala Crater 21 Oca 2009 
9 Society Island Sunrise 22 Oca 2009 
10 New Zealand Frost 23 Oca 2009