Robert Felix at IceAgeNow has a new book out, it's basically about this. I highly recommend the latest book from Felix, it's even better than the original paradigm breaker on that site.
All of this, including the cycles of the Ice Ages and climate, are all related to our passage through the galactic plane. The whole story is consistent and coherent throughout and it basically solves about half the biggest problems we know about in anthropology, evolution and paleoclimatology.
Robert Felix is due a Nobel Prize in there somewhere. I don't think he'll get one, however. Somebody in the mainstream will rip off his book, rewrite it so it's sheeple-friendly and easier on the human-lite intellect and immediately be hailed a genius.