[cogitator]

By the way, you don't have to take my word for this. Here are some links to look at:

Astronomical Theory of Climate Change

The Paleoclimate Record and Climate Models (long but comprehensive)

Milankovitch Theory Supported

And if you really, really want to get into this heavily: AS235/OBEE238: Ocean Biogeochemical Dynamics and Climate has a smorgasbord of links, including a link to the online book "Ocean Biogeochemical Dynamics"

You might find subchapter 10.4 of interest.

[Myrddin]

Check out Ice Age Now. Robert Felix has done some pretty good research in that book.