W. Z. Hoek has written:

'Atlas to palaeogeography of lateglacial vegetations'

A palaeogeographer is a person who is interested in palaeogeography - the study of historical geography - chiefly physical, but also political/cultural geography of the world in the geological past.

1) A lodestone (a magnet) held on a string (or, ubiquitously, in a compass) will swivel and orient itself to the earth's magnetic field. Iron particles in cooling magmas will align themselves similarly (aiding in analysis of plate-tectonic palaeogeography).

2) The earth is only capable of sustaining advanced life due to its magnetic field repulsing most of the harmful radiation in the solar wind. I.e., you're alive due to it.

3) Aurora are a visible manifestation of the interaction of solar radiation upon the earth's upper atmosphere as directed by its magnetic field.

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