World Lens: Week in Review — Dec. 27

Cholera down in Haiti, violence rises in Nigeria.

Shell Oil Spill Off Nigeria Likely Worst in Decade - An oil spill near the coast of Nigeria is likely the worst to hit those waters in a decade, a government official said Thursday, as slicks from the Royal Dutch Shell PLC spill approached the country's southern shoreline. (Photo: George Esiri/Landov)

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Shell Oil Spill Off Nigeria Likely Worst in Decade - An oil spill near the coast of Nigeria is likely the worst to hit those waters in a decade, a government official said Thursday, as slicks from the Royal Dutch Shell PLC spill approached the country's southern shoreline. (Photo: George Esiri/Landov)

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Haiti Sees Cholera Decline as Seasons Change - Aid officials in Haiti are reporting a steady drop in the number of cholera cases as the country settles into its dry season.An average of ten to 20 cases a day arrive in two separate treatment centers in the crowded capital of Port-au-Prince, compared to an average of 30 to 40 cases a day just a month ago, said Dr. Wendy Lai, a medical coordinator for Doctors Without Borders Holland. (Photo: THONY BELIZAIRE/AFP/Getty Images)