RedOrbit carries a story entitled "Research Claims Earth Facing Ice Age:"
Scientists are now making an alarming claim that the earth is on the brink of entering another Ice Age that could last the next 100,000 years.Read the full story here.
They believe a 12,000-year warming period is currently winding down.
They say ice cores, ocean sediment cores, the geologic record, and studies of ancient plant and animal populations all demonstrate a regular cyclic pattern of Ice Age patterns, separated by intervening warm interglacials, each lasting about 12,000 years.
So evidently this means that in the past 35 years, we've gone from the brink of an Ice Age (see this story from Time's June 24, 1974 issue), through the worst global warming in the history of the planet, to the brink of another Ice Age.