Christian Ruhl joins the podcast to discuss US-China competition and the risk of war, official versus unofficial diplomacy, hotlines between countries, catastrophic biological risks, ultraviolet germicidal light, and ancient civilizational collapse. Find out more about Christian's work here.

Timestamps:

00:00 US-China competition and risk

18:01 The security dilemma

30:21 Official and unofficial diplomacy

39:53 Hotlines between countries

01:01:54 Preventing escalation after war

01:09:58 Catastrophic biological risks

01:20:42 Ultraviolet germicidal light

01:25:54 Ancient civilizational collapse