It has plagued scientists and politicians for decades, but scientists now say global warming is not the problem.
We are actually heading for the next Ice Age, they claim.
British and Canadian experts warned the big freeze could bury the east of Britain in 6,000ft of ice.
Most of Scotland, Northern Ireland and England could be covered in 3,000ft-thick ice fields.
The expanses could reach 6,000ft from Aberdeen to Kent – towering above Ben Nevis, Britain’s tallest mountain.
And what’s more, the experts blame the global change on falling – rather than climbing – levels of greenhouse gases.
Lead author Thomas Crowley from the University of Edinburgh and Canadian colleague William Hyde say that currently vilified greenhouse gases – such as carbon dioxide – could actually be the key to averting the chill.
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The warning, published in the authoritative journal Nature, is based on records of tiny marine fossils and the earth’s shifting orbit.
The Earth has seen dramatic climate fluctuations – veering between cold and warm extremes – over the past three million years, the researchers say.
And changes in the Earth’s orbit and slowly falling levels of carbon dioxide are the cause.