#19 — The Riddle Of The Gun (Revisited)

#20 — Still Sleepwalking Toward Armageddon

#21 — On the Maintenance of Civilization

#22 — Surviving the Cosmos

#23 — Islam and the Future of Tolerance (Audiobook Excerpts)

#24 — Ask Me Anything 2

#25 — Behind the Gun

#26 — The Logic of Violence

#27 — Ask Me Anything 3

#28 — Meat Without Misery