[neverdem]

It is the driving force for ice ages.

A reversal of our magnetic poles sounds like even more of a driving force for our ice ages. Thanks for the link & comment.

[Myrddin]

Felix's first book, "Not by Fire, but by Ice" does a fine job of detailing a wide variety of physical/astronomical cycles. Based on the cycles identified, there is a fairly substantial confluence of multiple cycles that reasonably supports Felix's comment that a new ice age could begin any day now. The book I referenced is also very enlightening. Check out Carolina bays via Google. Felix has an interesting opinion and explanation.

[muawiyah]

The reversal of magnetic poles does not occur on the same time cycle as the iceages. However, a reversal can occur WITHOUT a cessation of magnetic field strength. What happens is the “new field” is growing while the “old field” is waning.