Professor Thomas Crowley of the University of Edinburgh, and Dr William Hyde of the University of Toronto report in the journal Nature that the current level of carbon dioxide (CO2) in our atmosphere could negate the onset of the next Ice Age, which could occur 10,000 years from now.
But they caution that their finding is not an argument in favour of global warming, which is driving imminent and potentially far-reaching damage to the climate system.
Earth has experienced long periods of extreme cold over the billions of years of its history.
The big freezes are interspersed with "interglacial" periods of relative warmth, of the kind we have experienced since the end of the last Ice Age, around 11,000 years ago.
These climate swings have natural causes, believed to be due to changes in the earth's orbit and axis that, while minute, have a powerful effect on how much solar heat falls on the planet. Source: ABC News in Science. You can click it to Read more about it...
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