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Nigeria is facing an agricultural emergency. The moth Tuta Absoluta has attacked one of the country's staple foods, causing tomato prices to soar. Scientists have found a pesticide that can kill the insect that carries the disease but some farmers believe pesticides could do more harm than good. As the Â鶹Éç's Stephanie Hegarty reports from Lagos, they may have found another solution in the "snake tomato". (Photo: Tomato soup with cream in the shape of the map of Nigeria. Credit: Thinkstock)