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Nigerian-born man aims for space travel
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Malawian creates bike-powered phone charger
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How best to fund nature’s conservation
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Ebola beds saved 40,000 in Sierra Leone
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Climate change may wipe out Kenyan lake
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World Bank shifts extreme poverty definition
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Sri Lanka biofuel project shot down in court
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Twitter helps scientists detect earthquakes
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Women in science awarded for excellence
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Modern warfare imperils vaccination workers
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