Alan Robock joins us to discuss nuclear winter, famine and geoengineering.

Learn more about Alan's work: http://people.envsci.rutgers.edu/robock/

Follow Alan on Twitter: https://twitter.com/AlanRobock

Timestamps:

00:00 Introduction

00:45 What is nuclear winter?

06:27 A nuclear war between India and Pakistan

09:16 Targets in a nuclear war

11:08 Why does the world have so many nuclear weapons?

19:28 Societal collapse in a nuclear winter

22:45 Should we prepare for a nuclear winter?

28:13 Skepticism about nuclear winter

35:16 Unanswered questions about nuclear winter