In this photo released by China's Xinhua News Agency, ousted Chinese politician Bo Xilai stands before the Shandong Provincial Higher People's Court. The court upheld Bo's conviction and life sentence for corruption and abuse of power. Xie Huanchi/AP hide caption

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Nigerian President Goodluck Jonathan declares a state of emergency during a live broadcast on state television on Tuesday. Utomi Ekpei/AFP/Getty hide caption

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NPR's Ofeibea Quist-Arcton on Nigeria's state of emergency

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A Nigerian health commissioner Dr. Sani Malam vaccinates a child for polio during a national immunization drive in Bauchi, Nigeria, last week. Deji Yake/EPA /Landov hide caption

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A boy works at an illegal gold mine in northern Nigeria. Lead from these mines has sickened thousands of children in the region. David Gilkey/NPR hide caption

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Ado Ibrahim carries his son Aminu through a village in northern Nigeria. Aminu, 4, was paralyzed by polio in August. David Gilkey/NPR hide caption

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Sahya Idriss, a service provider at the health clinic in Minjibir, carries a vial of the polio vaccine. David Gilkey/NPR hide caption

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At Polio's Epicenter, Vaccinators Battle Chaos And Indifference

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Women and their children wait for medication and instructions on how to use it at the clinic in Dareta, Nigeria. Treating children with high levels of lead is a painstaking process that works only if their environment at home is free from lead. David Gilkey/NPR hide caption

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Fallout From Financial Crisis: Thousands Of Nigerian Kids Poisoned By Lead

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