I don't understand the reasoning behind trying to discover anti-gravity. Attach a rocket to a load and make it accelerate at 9.8 m/s^2 and youve got an "anti-gravity" vehicle. It defies gravity as if it didn't exist. So reasoning says, what would be the use of anti-gravity if it did exist and or what properties would even make it remotely useful? It would have to still use the same amount of energy to make an object escape a gravitational well as conventional methods do otherwise it would be against conservation of energy. EDIT: Sorry I thought this was General Physics, not General Math, someone please move the thread.