Will Earth Face A Mini-Ice Age?

The sun is heading into an unusual and extended period of hibernation that could trigger a mini-Ice Age on Earth, scientists claim. A decrease in global warming might result in the years after 2020, the approximate time when sunspots are expected to disappear for years, maybe even decades.

While the effects of a calmer sun are mostly good - there'd be fewer disruptions of satellites and power systems - it could see a sharp turnaround in global warming.

An absence of sunspots is not an unprecedented situation. It has happened before, but not since the early 18th century. Lead researcher Frank Hill, of the National Solar Observatory, said: 'The solar cycle is maybe going into hiatus, sort of like a summertime TV show.'

While scientists don't know why the sun is going quiet, all the signs are that it will. Dr Hill and his team have based their prediction on three changes in the sun spotted by scientific teams - weakening sunspots; fewer streams spewing from the poles of the sun's corona; and a disappearing solar jet stream.

Dr Richard Altrock, the study's co-author and an astrophysicist at the Air Force Research Laboratory, said these three cues show that 'there's a good possibility that the sun could be going into some sort of state from which it takes a long time to recover'.