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Global warming or a new ice age? Strange things are happening on the sun according to  Richard Harrison, head of space physics at the Rutherford Appleton Laboratory in Oxfordshire. The sun’s activity varies in an 11 year cycle, and now we should be at the maximum. Still, you have to go back 100 years to find a more inactive sun. And even worse: An analysis of ice-cores, which hold a long-term record of solar activity, suggests the decline in activity is the fastest that has been seen in 10,000 years. Should we enjoy it as the Londoners on the picture, enjoying a fair on a frozen Thames in the 17th century,or should we be scared out of our witts? Find more background information at the BBC: http://www.bbc.co.uk/news/science-environment-25743806