7th November 2011 – Magnetic Pole Reversals

When’s the next one?  Is it dangerous? How do I avoid ending up at the South Pole?  Is this the cause of mass extinctions?  Will I have to wear a sunhat all the time?

All valid questions if the North Pole of the Earth suddenly became the South Pole. Professor Richard Holme of Liverpool University will explain what happens and the many times it has happened before – and how we know.

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