We are in a lull before the storm of catastrophic natural climate change. We'd better deal with global warming quickly, before the next ice age comes!
"The climate of the past 9,000 years appears to have been exceptionally stable. For two million years, the earth's climate has been dominated by periodic ice-ages, each lasting tens of thousands of years. The ice-ages are separated by warmer "interglacial" periods, such as the one we are in now. Large climate fluctuations on time-scales of decades to centuries have long been known to occur during ice-ages, presumably due to sudden surges or collapses of the massive ice sheets. Recent evidence from ice-core drilling in Greenland indicates that similar fluctuations also occurred during the previous interglacial period, possibly due to rapid changes in ocean circulation. No one knows why these fluctuations have not occurred during the current interglacial period, allowing a (possibly essential) "window" of climatic stability for the development of human civilisation. Nor do we know how man-made GHG emissions might affect this stability."
Source: http://www.cs.ntu.edu.au/homepages/jmitroy...uncc/fs017.html
