Season 29

1.Search for a Safe Cigarette

2.18 Ways to Make a Baby

3.Secrets of the Mind

4.Sex: Unknown

5.Russia's Nuclear Warriors

6.Bioterror

7.Life's Greatest Miracle

8.Methuselah Tree

9.Flying Casanovas

10.Death Star

11.Neanderthals on Trial

12.Fireworks

13.Secrets, Lies, and Atomic Spies

14.The Missing Link

15.Shackleton's Voyage of Endurance

16.Why the Towers Fell

17.Fire Wars