1. I don't know, but let's hope the arms war never gets to that point.
2. In the pictures, the fountain of youth always looks pretty shallow, and like it was said earlier on this page, you'd have to drink it, not breath it.
3. No. I have better things to do that stupid paradox missions.
4. A grandparent only accounts for 1/4 of someone's genes, or 'existence', so her appearance and organs would change, but she would still exist.
5. Anyone's guess. Weather men are almost always wrong.
6. Potato, Cats, random, enthusiastic. No. (Hey, you never gave me a time frame to answer the question!)
7.The other speed-of-light cars around you will be most grateful for the safety precaution and increased visibility.
8. I don't know how that would work, but if you keep going around like that, God will make a slightly lighter rock and drop it on your head.