A global catastrophic risk (GCR) is an event that poses a risk of major harm on a global scale (Bostrom & Ćirković 2008).

GCRs risks include existential risks, but are not restricted to them. Examples of non-existential global catastrophic risks include risks of hundreds of millions (but not billions) of people dying due to a natural pandemic or due to climate change.

Such catastrophic risks have obviously bad direct effects: they may involve many people dying, or our technological capabilities being greatly reduced. There may also be bad indirect effects, for instance by destabilizing political systems in a way that increases the likelihood of war or totalitarian government....

(Read More)