A Moment of Science

Posts tagged south poles

December 6, 2005

 

When North Goes South

On a previous show we discussed how, every 250,000 years or so, the north and south poles switch places. Not that the places themselves move, rather, the entire magnetic field of the earth flips around, resulting in the pole we now call north being on the southern tip of the planet, and vice versa. Why does this happen? Learn more on this Moment of Science.

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