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Ofeibea Quist-Arcton

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RACHEL MARTIN, HOST:

It's been more than a month since Nigeria's president, Muhammadu Buhari, traveled to London on what was billed as two weeks' vacation — with routine medical check-ups. He hasn't been back home since.

His government says the 74-year-old is in good health. But many Nigerians are not convinced and wonder whether their president is gravely ill — or worse.

Buhari's long absence comes amid Nigeria's worst economic crisis in years and other pressing national problems, including a famine in the northeast, the region badly hit by extremist Boko Haram violence.

Copyright 2017 NPR. To see more, visit http://www.npr.org/.

STEVE INSKEEP, HOST:

A prominent Muslim leader in Nigeria is making a point about a common practice in Islam. He says if people are worried about poverty or terrorism, they should consider how those problems can be made worse by polygamy. Here's NPR's Ofeibea Quist-Arcton.

President Robert Mugabe turns 93 on Tuesday, making him the oldest president in Africa — and the world. He's the only leader most Zimbabweans have ever known, spending nearly 37 years at the helm since independence from Britain and the end of white minority rule in Rhodesia in April 1980.

Southern Africa is facing an invasion by an army — but not the sort of force you can defeat with ammunition. This foreign invader is an agricultural pest that is threatening the breadbasket of the region.

Zambian farmer Daniel Banda noticed in late December that something was munching through his crop of corn, destroying the maize fields on his small farm just outside the capital, Lusaka. Voracious caterpillars, known as fall armyworms, had nestled in the cobs and chomped through the leaves.

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