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- S38.E1 ∙ Deadliest Earthquakes
- S38.E2 ∙ Making Stuff: Stronger
- S38.E3 ∙ Making Stuff: Smaller
- S38.E4 ∙ Making Stuff: Cleaner
- S38.E5 ∙ Smartest Machine on Earth
- S38.E6 ∙ Making Stuff: Smarter
- S38.E7 ∙ Crash of Flight 447
- S38.E8 ∙ Venom: Nature's Killer
- S38.E9 ∙ Japan's Killer Quake
- S38.E10 ∙ Power Surge
- S38.E11 ∙ Engineering Ground Zero
- S38.E12 ∙ Surviving the Tsunami
- S38.E13 ∙ Finding Life Beyond Earth: Are We Alone?
- S38.E14 ∙ Finding Life Beyond Earth: Moons and Beyond
- S38.E20 ∙ Iceman Murder Mystery
- S38.E21 ∙ The Fabric of the Cosmos: What is Space?
- S38.E22 ∙ The Fabric of the Cosmos: The Illusion of Time
- S38.E23 ∙ The Fabric of the Cosmos: Quantum Leap
- S38.E24 ∙ The Fabric of the Cosmos: Universe or Multiverse?