Sudan, S.Sudan say border quiet after AU ultimatum
Sudan extends deadline for expulsion of S.Sudanese
INTERVIEW-Kenya risks oil conflict if wealth not shared-minister
A row is already brewing over the ownership of the land on which oil was discovered
Food fears feed global scramble for land
World Bank figures show that worldwide, 56 million hectares of farmland were leased or sold in 2008-2009 alone
INTERVIEW-Food competition to leave poor hungrier by 2050-expert
Environmental economist Lester Brown describes what global hunger will look like in 50 years