- #89 — On Becoming a Better Person
- #88 — Must We Accept a Nuclear North Korea?
- #88 — Must We Accept a Nuclear North Korea?
- #87 — Triggered
- #87 — Triggered
- Team Human: Best Friends, Part 2
- Ep. 46 Walter Kirn Pt. 2 “Toward Human Ends or the End of Humans?”
- #86 — From Cells to Cities
- #86 — From Cells to Cities
- Team Human: Best Friends
- Ep. 45 Walter Kirn Pt. 1 “Training Our Replacements”
- #85 — Is this the End of Europe?
- #85 — Is this the End of Europe?
- Ep.44 Special Episode “Collective Power”
- #84 — Landscapes of Mind
