2. Flood warning: A Gray Goo of evil robots is rising.
The Gray Goo nightmare is an apocalypse brought on by out-of-control, self-replicating molecular nanotechnology (mini robots) that would consume all matter on Earth while continuing to build more of themselves.
Just imagine if you have a tiny robot too small to even see, and it's floating in a soda bottle. It can copy itself in just one minute. Then, the two robots each build two more in the next minute. Soon, the Earth is a big, nasty sea of vicious robots. These robo-critters' first priority will be to replicate and they need fuel to do so—meaning they'll be munching down everything and anything in their paths. Don't worry about them eating our food—they'll just eat us. Oh, and your bottle exploded in the first hour. Exponents are freaky.
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