1. Replicating robots.

2. Underground metropolis

3. Microchip enhanced brains

4. Time traveling aliens.

5. Mass earth evacuation

6. Time travel tourism

7. Invention of an invisibility suit

8. First manned expedition to an alien planet

9. A future with no electricity

10. Perpetual energy machine

+2

-2

Let us know what you think about our ideas! Comment below to give us your opinion, add onto an existing idea, or submit one of your own!