Daniel - global warming and global cooling are recurring constantly. Are we in a long term warming cycle? No one knows. Are we in a longterm cooling cycle? However, we do know it is one or the other. The science of climatology is in its infancy, just as meterology and oceanograpy. Cimate Modeling is still primitive - it is useful as a tool, but the answers are all dependent on good data. However, the data is sparse, from widely separated locations, and there is too much data variation over short time periods.