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A man feeds his child at a field hospital run by the International Rescue Committee (IRC) in Dadaab, Kenya, Monday, Aug 1, 2011. Dadaab, a camp designed for 90,000 people now houses around 440,000 refugees. Almost all are from war-ravaged Somalia, with some having been here for more than 20 years, when the country first collapsed into anarchy. (AP Photo/Schalk van Zuydam)

Aid workers rush to help East Africa's hungry

Officials warn as many as 800,000 children could die across the Horn of Africa due to hunger and drought. (AP)