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The attack occurred as many students of an agricultural college slept. As many as 50 people may be dead as a result of violence that is being blamed on the group Boko Haram.
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The Islamist militant group has been taking aim at Muslims whom it believes are adopting Western ways. The latest attacks included one at a mosque.
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The number of babies born with the life-threatening disease will climb by a third in the next 40 years, scientists say. The vast majority of sickle cell cases will occur in developing countries, which don't have the resources to treat deadly complications arising from the genetic disorder.
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Most of the victims were students at a boarding school. The Islamist group known as Boko Haram is suspected. Both the militants and government forces have been accused of using brutal force in recent years.
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Pledge 51 creates applications for Nigeria's low-tech cellphones. The company thinks it could grow its business with help from foreign investors, but Nigeria's low GDP has made that difficult. If the country changes the way it calculates this figure, that could help Pledge 51 bring in new investment.
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Nigeria has been accused of doing "too little, too late" to stem militant Islamist violence, and President Goodluck Jonathan has acknowledged he's not fully in control.
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The Microsoft founder and philanthropist is putting his money and time where his passion is: eradicating polio. Gates talks with NPR's Robert Siegel about why it makes sense to spend an estimated $5.5 billion to wipe out the disease once and for all.
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The World Health Organization released a six-year plan to wipe out the remaining pockets of polio and ensure the virus doesn't come back. With fewer than 20 polio cases so far this year, the world is closer than ever before to eradicating polio.
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Last year there were just over 200 cases of polio in remote parts of Nigeria, Afghanistan and Pakistan. Now, a new $5.5 billion plan aims to eliminate the disease for good by 2018.
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The world-famous Nigerian author Chinua Achebe has died. Annalisa Quinn reflects on the legacy of Achebe's novel Things Fall Apart.