Apparently, it's long overdue. The last pole reversal was about 700,000
years ago. But pole reversals are supposed to happen every 250,000 years or
so.

So it could happen any day now...

http://www.pbs.org/wgbh/nova/magnetic/reversals.html


Cub Driver wrote in
news

Actually, according to the discovery channel, the earth's poles are
weakening, and will ultimately reverse polarity...

When should we start worrying about this, in 500 or 50,000 years?

And will it come before or after we are all drowned by rising sea
levels?

all the best -- Dan Ford
email: (put Cubdriver in subject line)

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