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Floods in 1995 wiped out all food crops for the year in North Korea, as well as the ability to plant the following year's crops. It was exacerbated by a policy of self-sufficiency, a harsh climate and a lack of fertile land.

Also on the programme, how can you prepare for famine ahead of time with Peter Walker of the Red Cross and Red Crescent and the proposal to dump asbestos into the sea off Bermuda.

Picture: Pyongyang, North Korea, Credit: Getty Images