# Title Aired
1 Megastructures (Original Summary Version)
2 The Fermi Paradox & the Dyson Dilemma
3 Fermi Paradox Solutions
4 Fermi Paradox: Apocalypse How
5 Habitable Planets
6 How does Tidal Locking Work?
7 Habitable Planets: Tidally Locked Worlds
8 MegaStructures: Orbital Rings & Space Elevators
9 MegaStructures: Skyhooks
10 Habitable Planets: Large Moons
11 Megastructures: Launch Loops, Mass Drivers, and Space Fountains
12 Terraforming Techniques
13 The Impact of Nuclear Fusion
14 Habitable Planets: Life on Rogue Planets
15 Megastructures: Rotating Habitats
16 Interstellar Colonization