Having completed two years toward a doctorate in Geology, I seem to remember that there were glacial and inter-glacial periods before Al Gore and Corporate greed. There are reasonable theories about glacial and interglacial periods occurring cyclically. Best I could understand, we were likely to get another glacial period, and because we are currently in an interglacial period, it is very definitely possible that the changes occuring are not within our control. I don't think the issue is a no-brainer, either way. Geologists see changes in thousands of years, not fifteen or twenty.

Jerry