Art wrote:
"Tom and the three Richards can`t put a neck hold on the advance of
science forever."

Permanent magnets are collections of current loops, so it is supposed
thet the earth`s magnetism is caused by currents in the earth. Its poles
approach alignment with the earth`s axis of rotation.

Solar storms are seen to affect the earth`s magnetism and evidence
exists that poles have reversed over the eons of history. The most
recent reversal came about 2.5 million years ago.

"College Physics" by Frank Miller, Jr. is the source of the above.

Best regards, Richard Harrison, KB5WZI