Existential risk

Existential risks are risks that threaten humanity's existence.
== Classification according to probability and danger ==
=== Very low-probability ===
# killer natural virus.
# alien invasion
# asteroid impact
# simulation shuts down
# gamma ray burst
# supervolcano eruption
# black hole impact
=== Wouldn’t kill everyone, but still worth preventing ===
# nuclear holocaust
# runaway climate change
# repressive global dictatorship
=== The really important ones ===
# superintelligence - not just AI - but superhumans too
# deliberate misuse of nanotech (arms race, nanoweapons)
# accidental misuse of nanotech
# killer artificial virus
# antimatter holocaust?
# particle accelerator disaster
== Ways to counteract ==
# friendly superintelligence
# nanofactory restrictions
# universal sousveillance
# ocean habitat
# subterranean habitat
# antarctic habitat
# space habitat
== "Grid of risk" ==
Risk grid
Superweapons 	Biotechnology 	Nanotechnology	Cognitive technology
Nuclear weapons	Hybrid/designed diseases 	Arms races 	Neural implants
Solar weapons 	Full-fledged hyperdisease 	’Grey goo’ 	Wireheading
Kinetic weapons	Artificial life (nanobiotech)	Thermal limit 	Superintelligence
Source: Comprehensive List of Existential Risks, Part 2 by Michael Anissimov
Category:Human-Led Disasters
Category:Natural Disaster