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Ice Age Averted Due to Greenhouse Gas Warming January 13, 2012
Glaciers and icebergs
The transition to expanding polar ice would have begun in about 1,500 years without man-made greenhouse gas emissions.
The next ice age could be deferred for tens of thousands of years thanks to heat being stored in the atmosphere by greenhouse gas emissions, according to a new study.

Based on long-term changes in Earth’s orbit around the sun, as well as the tilt and wobble of the planet on its axis, we should be slowly moving toward an end of our modern warm age within 1,500 years.

Those influences that cause the transition back and forth from ice ages to periods when the glaciers retreat were discovered nearly 100 years ago by Serbian scientist Milutin Milankovic.

But a group of scientists from London, Florida and Norway have now calculated that carbon dioxide levels would have to drop by about a third before a shift toward a new ice age could begin.

Other researchers have calculated that even if all man-made sources of greenhouse gases were suddenly shut down, greenhouse gas levels would remain elevated for at least 1,000 years.

Photo: File