Season 1
Episodes
1 Oceans: Into the Blue Jan 13, 2011 
2 Deserts: Life in the Furnace Jan 20, 2011 
3 Arctic: Life in the Deep Freeze Jan 27, 2011 
4 Jungles: People of the Trees Feb 3, 2011 
5 Mountains: Life in Thin Air Feb 10, 2011 
6 Grasslands: Roots of Power Feb 17, 2011 
7 Rivers: Friend and Foe Feb 24, 2011 
8 Cities: Surviving the Urban Jungle Mar 3, 2011