is there a type of theme or invention or something like that??

We have to find a solution to a problem, for example, how to propulse in space if there isn't any oxygen, solution: attach sails on the ship and use the solar wind to accelerate, but with more explanation of coarse. I can't choose this one because it was already used last year.

why don't you go old school?? how to save more energy?? no one could ever figure out a solution

That's the problem, every one is always doing this, it is too mainstream, I want some thing new, I have made for the past years on quantum teleportation, and metamaterials, I am thinking about something like nanotechnology and immortality, but I don't know how to use them in a solution. Maybe : Problem, achieving a life span of thousand years, and I could explain with different methods, like organs transplant, blood cleaning, maybe using nanomachines into it too, but I looked that last year some one already done it and won, so I don't want to look some one that takes the same idea in order to win it by the same methods.

Problem: Date raping a woman at a nightclub

I guess, the problem would be just picking up chicks, and the solution would be drugging them, but I don't want to get a 0 on it, and be sent to a psychotherapist.

you could do it if you wanna get sued or put in jail..

Problem: How not to be a pussy
Solution: Submit a science fair experiment involving date rape.

you have a wicked mind.. is that how you pass school????

Totally.

........ i'm speechless.......