According to new images released by the Satellite Sentinel project, a campaign group set up by Hollywood star George Clooney, the army in Sudan is preparing for a new assault in one of these regions, South Kordofan.

BBC: South Sudan in Kenyan oil pipeline deal

In western Kenya a new counselling and HIV-testing project allows rural health-care surveyors to set up EHRs from patients' homes by putting their data into mobile phones.

ECONOMIST: A doctor in your pocket

"Everybody at the trust has worked so hard over the winter setting up this brand new osprey project in Wales, so you can imagine our absolute delight when this male osprey decided to set up home right here on the Dyfi, " Mr Evans said.

BBC: Osprey moves into man-made nest

There is also a long-term conservation project which has attracted the support of some up-market benefactors in London, Geneva and New York, who set up the Saint Catherine Foundation.

ECONOMIST: Saint Catherine's monastery