1. Océanos (Oceans - Into the blue)
2. Desiertos (Deserts - Life in the furnace)
3. Ártico (Arctic - Life in the deep freeze)
4. Selvas (Jungles - People of the trees)
5. Montañas (Mountains - Life in thin air)
6. Praderas (Grasslands - Roots of power)
7. Ríos (Rivers - Friend and Foe)
8. Ciudades (Cities - Surviving the urban jungle)
