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Scientists have warned that global sea levels could rise far more than predicted, due to an acceleration of the rate that ice is melting in Greenland and Antarctica.

Their new study projects that if the global temperature rises by more than two degrees, this would submerge one point eight million square kilometres of land.

Also on the programme: more on the man who has just climbed Everest for the twenty fourth time; and should police be allowed to keep our faces in police databases?

(Photo: Ice, Credit: Getty Images)