Reprisals and revenge in a desert oasis as the battles continue against the final Gaddafi loyalists -- Justin Marozzi's been learning of the tensions in a small community in the far south of Libya. Katy Watson in Doha on how the Gulf state of Qatar was one of the first countries to declare its support for the Libyan rebels and how it is now reaping the benefits. Jonathan Head, who accompanied Turkish premier Erdogan on part of his North African tour, contends that a Turkish leader, elevated to the status of an Arab champion, is extraordinary. Claudia Hammond is in Costa Rica: tle elderly there reach a greater age than in any other nation in the Americas but the burden, she tells us, hangs heavily on the country's healthcare system. And Daniel Schweimler took some long bus trips and walked a great distance to visit a remote part of Argentina which is almost untouched by the modern world.

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