20 big questions

One of the articles that interested me, was question about whether or not there were more universes. This was interesting, because if there are more universes out there, they might no abide by the same law of physics as us, and there may be advanced beings in them, and they might even be watching us. One hypothesis in this field is that If scientist are observing unexplained "dark flow" then other universes may exist.

My 20 big Questions:

1. What happens after death?
2. Are we the only planet with life on it?
3. Will humans ever solve their population problems?
4. Will humans ever solve energy problems?
5. How long will humans survive?
6. How did life start?
7. How did the big bang start?
8. Are humans just another being's experiment?
9. Do people have free will, or are their action pre-decided? 
10. Will humans ever live forever?
11. Will there ever be a "better" evolution of humans?
12. How does the human brain work?
13. Is there a god?
14. What will happen if a temperature reaches absolute zero?
15. Will any other animals evolve the way humans did?
16. Will time travel ever exist?
17. What will happen when the sun dies?
18. Will there ever be a nuclear was?
19. What would lift be life after a nuclear war?
20. Will computers ever reach a limit on how fast they can be?