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

itoggle caption Xie Huanchi/AP

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

itoggle caption Deji Yake/EPA /Landov

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

itoggle caption David Gilkey/NPR

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

itoggle caption David Gilkey/NPR