We are all familiar with magnets.The Chinese knew about themin the eleventh century.But the earthitself is also a magnet,with a magneticNorth and a magnetic South.No one really understands verymuch about the earth’s magnetism,although many people have writtenabout it.Scientists believe the centreof the earth is like an enormous We are all familiar with magnets.The Chinese knew about themin the eleventh century.But the earthitself is also a magnet, with a magnetic North and a magnetic South .No one really understands verymuch about the earth’s magnetism, although many people have writtenabout it.Scientists believe the center of the earth is like an enormous