There might be some short-term truth to global warming but the long-term 100,000 year cycle is we warm up, lose glaciers and ice pack and then go back into another ice age. We go into an ice age and stay cold for 80,000 years and then we warm up the last 20,000 years and peak out before we go into the next ice age. Right now we are at the end of the 20,000 year warming cycle.
The <a href="http://en.wikipedia.org/wiki/File:Vostok-ice-core-petit.png">Vostok ice core data graph</a> reveals that global CO2 levels regularly rose and fell in a direct response to the natural cycle of Ice Age minimums and maximums during the past four hundred and twenty thousand years. Within that natural cycle, about every 110,000 years global temperatures, followed by global CO2 levels, have peaked at approximately the same levels which they are at today.
Today we are again at the peak, and near to the end, of a warm interglacial, and the earth is now due to enter the next Ice Age. If we are lucky, we may have a few years to prepare for it. The Ice Age will return, as it always has, in its regular and natural cycle, with or without any influence from the effects of AGW.
The AGW theory is based on data that is drawn from a ridiculously narrow span of time and it demonstrates a wanton disregard for the 'big picture' of long-term climate change. The data from paleoclimatology, including ice cores, sea sediments, geology, paleobotany and zoology, indicate that we are on the verge of entering another Ice Age, and the data also shows that severe and lasting climate change can occur within only a few years. While concern over the dubious threat of Anthropogenic Global Warming continues to distract the attention of people throughout the world, the very real threat of the approaching and inevitable Ice Age, which will render large parts of the Northern Hemisphere uninhabitable, is being foolishly ignored.