Nigeria's internally displaced not welcome in Lagos
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Nigerian authorities in Lagos refuse to house people fleeing Boko Haram fighters. Despite the deadly violence in the northeast, the displaced are not welcome in the megacity. Also, South Africa relies heavily on coal to produce electricity. But as the country vows to curb climate change, it's now trying to diversify its energy landscape. And we see how start-ups have mushroomed in Ghana, where phone and video game industries keep booming.