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A substantial decline in sea ice levels in the arctic may be mainly down to humans, a study has found. The study suggest a likely figure of 75% of the ice loss at sea was caused by human activity, but said as much as 95% could have been attributable to man-made greenhouse gases.
Summaries and transcripts from TV and radio
Today on Week in Westminster, BBC Radio 4
Today on Week in Westminster, BBC Radio 4
Today on Week in Westminster, BBC Radio 4
16/05/2013