Nanoshock

Nano-plague, a hypothetical catastrophe that all nanotechnology with take control of the Earth.
==Hypothesis==
Nanotechnology is the study of microscopic robots that can replicate rapidly without any demand. This will give rise to a plague where the nanobots takes over the human body killing the host and controlling all body functions such as breathing, thinking, and speaking. 
Category:Doomsday theories (Age of Cybergenetics)