I picked up on this article in the Telegraph on-line. I read a book about two years ago with a similar theory that used the idea of pole toppling as the answer to why certain groups of animals and civilisations dissapeared so quickly in the past.

Further pole toppling was a regular recurring event according to Sir Ian Rankin and the author of the other book I'd read. Sorry cannot remember that particular author.

The blue clicky is

Doomsday theory

I would be interested in any catters ideas either supporting or not supporting the theory.

In many ways it makes frightening sense.