“Milankovitch theory explains interglacial cycles not ice ages.”
For us laymen, what is the difference?
Ice ages are major and there have only been four in the history of the Earth. Interglacials are relatively warm periods that occur within ice ages. We’re in one now.
See post 33 in this:
"http://www.freerepublic.com/focus/f-news/3469421/posts
Slightly different subject but has the info you need.