What do you when patients with an airborne infectious disease are resistant to all drugs available to them? Hospitals in South Africa have limited resources and now patients are being sent home.
Fighting the war against sand - Outlook talks to the photojournalist who has travelled across the spreading deserts of China where more and more people are becoming environmental refugees - it's now estimated that almost one fifth of China's land area is now desert.
Gallagher's interview begins at 16:56.
The West African country of Guinea-Bissau is one of the poorest nations in the world, is a base for narcotics heading to Europe and has a big crack cocaine problem.
It has suffered a series of coups and a civil war. Earlier this year the head of the armed forces was killed and, a few hours later, the president was murdered in retaliation.
But are things turning around for Guinea-Bissau? The killings led to elections being held last weekend.
A hairdryer whirrs. Teenage girls reach for sequins, glitter and hairpins. It's the weekend in Yemen's capital, Sanaa, and seven sisters are dressing for a wedding.
The eldest, Ashwaq, 21, a university graduate, wants to be a journalist.
Asked what she thinks about Yemen's new self-appointed morality authority, she looks up from styling her sister's hair.
"The first thing they'll do is stop women from working. Then they'll force us to wear the veil."
Yemen is a conservative Islamic society, where parliament boasts only one woman out of 301 MPs.
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