Artificial Intelligence, Nanotechnology, Immortality.
a scenario that nanobots “would be designed to consume any carbon-based material in order to feed the replication process, and unpleasantly, all life is carbon-based. The Earth’s biomass contains about 10⁴⁵ carbon atoms. A nanobot would consist of about 10⁶ carbon atoms, so it would take 10³⁹