Gray goo

Definition

Gray goo is a hypothetical global catastrophic scenario involving molecular nanotechnology in which out-of-control self-replicating machines consume all biomass on Earth while building many more of themselves, a scenario that has been called ecophagy (literally: "consumption of the environment"). The original idea assumed machines were designed to have this capability, while popularizations have assumed that machines might somehow gain this capability by accident.

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Vallero Dead Hand Decision tree Decline in amphibian populations Decline in insect populations Decline of the Dharma Declinism Defaunation Deforestation Desertification Dhu'l-Qarnayn Dhu'l-Suwayqatayn Disaster Disaster film Doomsday Clock Doomsday argument Doomsday device Dorion Sagan Drexlerian nanotechnology Drexler–Smalley debate on molecular nanotechnology Dysgenics Earth Earth Changes Earth Overshoot Day Ecocide Economic collapse Economic depression Ecophagy Ecosystem collapse Electromagnetic pulse Electron microscope Engines of Creation Environmental degradation Environmental issues with coral reefs Eschatology Ethics of technology Event tree Events of Revelation Existential risk from artificial intelligence Exploratory engineering Exponential growth Extinction Extinction event Extinction risk from climate change False vacuum Feynman Prize in Nanotechnology Financial crisis Flood basalt Foresight Institute Four Horsemen of the Apocalypse Frashokereti Fullerene Futurama Future of Earth Future of Humanity Institute Future of Life Institute Future of an expanding universe Futurism (Christianity)Gamma-ray burst Genetic erosion Genetic pollution Geomagnetic storm Global catastrophic risk Global dimming Global terrestrial stilling Gog and Magog Great Apostasy Great Mambo Chicken and the Transhuman Condition Great Tribulation Green nanotechnology Grey Goo Habitat destruction Hazard Health and safety hazards of nanomaterials Heat death of the universe Hindu eschatology Historicism (Christianity)Historicist interpretations of the Book of Revelation History of nanotechnology Holocene extinction Horizon (video game series)Human extinction Human impact on marine life Human impact on the environment Human overpopulation Hypercane Hypernova Ice age Idealism (Christian eschatology)Impact event Impact of nanotechnology Impact winter Industrial applications of nanotechnology Institute of Physics Intergalactic star Interplanetary contamination Islamic eschatology Israfil J. Storrs Hall James C. Bennett Jewish eschatology John von Neumann K. 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