Impact on Animals
Would a dramatic change in the Earth's magnetic field affect creatures that rely on it during migration?
As this time line shows, our planet's magnetic shield has reversed its direction hundreds of times.
Gallery of Auroras
Auroras like those displayed here would be visible every night of the year during a magnetic field reversal.
See a Reversal
Watch a simulated flip of the Earth's magnetic field, from the first signs of instability to the final reversal.
TV Program Description
NOVA News Minute
Watch a news clip related to NOVA's "Magnetic Storm" program.
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