Facinating topic...All I know is it's bloody cold here in UK?!!
Read this a few weeks back!!
"Earth's north magnetic pole is racing toward Russia at almost 40 miles (64 kilometers) a year due to magnetic changes in the planet's core, new research says.
The core is too deep for scientists to directly detect its magnetic field. But researchers can infer the field's movements by tracking how Earth's magnetic field has been changing at the surface and in space."
http://news.nationalgeographic.com/n...arth-core.html
viking