Abstract
The enigma of geomagnetic reversals and their apparent link with other phenomena, such as faunal extinctions, is shown to be explicable by treating these reversals as a relative rather than an absolute effect. Instead of reversing the magnetic field, it is suggested that a reversal of the Earth itself in a particular manner is sufficient to account for the behaviour of the field in detail during a reversal, and for explaining the links with the various other phenomena. It is shown that a wide variety of data is compatible with this hypothesis, not only from modern geological and related investigations, but also from astronomy and from ancient sources.