1: The Nature of Things Nuclear Dynamite

2: The Nature of Things Breath of Life

3: The Nature of Things Spare Parts

4: The Nature of Things Lost Worlds: Wild South America

5: The Nature of Things Lost Worlds: Wild South America: Monkey Jungles

6: The Nature of Things Lost Worlds: Wild South America: Amazon Jungle

7: The Nature of Things Lost Worlds: Wild South America: The Mighty Amazon

8: The Nature of Things Lost Worlds: Wild South America: The Andes

9: The Nature of Things Amanda's Choice

10: The Nature of Things The Secret Life of the Crash Test Dummy

11: The Nature of Things Lost Worlds: Wild South America: Penguin Shores

12: The Nature of Things Lost Worlds: Wild South America: Great Plains

13: The Nature of Things Coastal Forest/Salmon Forest

14: The Nature of Things The Price of Salmon

15: The Nature of Things Surgeons of the Future

16: The Nature of Things Maisin People In Papua New Guinea

17: The Nature of Things Toxic Legacies

18: The Nature of Things Hospital at the End of the Earth

19: The Nature of Things Worst Case Scenario