Scientists working on levitation

The same team of scientists that announced a theory that might one day lead to invisibility, has come up with a system that could lead to levitation. Physicists Ulf Leonhardt and Dr Thomas Philbin of the University of St Andrews in Scotland have come up with a way to reverse the casimir force on nanoscale objects. Casimir force was discovered in 1948 and is the reason why very small objects "stick" together. Scientists do not fully understand why the casimir force works, but it is what causes atoms and other subatomic particles to attract each other. It's also the reason why a gecko lizard can walk up sheer walls and across ceilings. For the moment, the system that reverses the casimir force works only on the nano scale, but the theory behind it should scale up to larger objects. Such as people.

Check it out at PhysOrg: Scientist float levitation theory