2. Nope. Eternal life means they can now breath underwater.
Or: the fountain grants no death from old age or natural causes, so he can drown.
5. USA: 0 today, -31.999972 tomorrow
Anywhere else: 0 today, -8.8889 tomorrow.
Convert, divide by 2 if positive or multiply by 2 f negative, convert back. Easy.
6. Nope.
7. They don't show. Doesn't negate the fact that they are on and being powered.
8. Then it's just there.