I've been a long advocate that Rotating Magnetic Fields is what allows the earth to have the gravity that it does. The "inertia" caused by the earth's rotating magnetic field is what we feel as gravity. It also explains why the magnetic poles "swap" every so often, north to south, that kind of thing.
I am an expert in the field of Diamagnetism, think of being able to introduce "impedance" into a magnetic field much like a resistor can be introduced to an electrical current, varying the "currend drop". Magnetic fields are usually highly localized around highly charged particle fields, even if no other fields exist to be attracted or repelled to them to be observed. It stands to reason that since most organic materials have high diamagnetic "potential" that we ourselves could be used one day to vary a magnetic field.