Well thank you Ultra_Pheonix, you have redeemed me most well. *does a jigg*, now where's e-nonymous to give his usual ignorant and unsupported opinion?
The computer simulations, conducted at the Oak Ridge National Laboratory in Oak Ridge, Tenn., provide the strongest evidence yet that a core georeactor has been at work for some 4.5 billion years, the widely accepted age of Earth -- and that an end to its lifetime might be approaching, Herndon contends.
"The most important implication of the findings would be to explain the source of the magnetic field, one of the great unresolved problems of our time,"
The current theory holds that the magnetic field is created by slow movement of the inner mantle around the core, basically as a giant dynamo or generator, forming electrical induction through the physical movement.