Humanity today faces incredible threats and opportunities: climate change, nuclear weapons, biotechnology, nanotechnology, and much, much more. But some people argue that these things are all trumped by one: artificial intelligence.
It could be difficult for human civilization to survive a global catastrophe like rapid climate change, nuclear war, or a pandemic disease outbreak. But imagine if two catastrophes strike at the same time.
The probability of impact by one of these before the end of the century is 0.0005 percent. On the other hand, recent research suggests a 2 percent probability of global catastrophe from anthropogenic climate change by the end of this century.