Figure 1: Magnetic field lines flow out of the South Magnetic Pole and reenter the globe at its northern end. Some creatures seem able to figure how steep the inclination angle of the field lines is at any given location and use that knowledge to aid in navigation.



This image is part of the PBS Nova documentary Magnetic Storm . Click here to watch.

Source: http://www.pbs.org/wgbh/nova/magnetic

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Added: 15 years ago.
Topic: General Geology