Just over two years since Egypt's dictator President Hosni Mubarak resigned , little has changed. Cairo's infamous Tahrir Square has remained a continual site of clashes between demonstrators and security forces, despite a newly elected president.

Feeding the 9 Billion: The tragedy of waste

By 2075, the United Nations’ mid-range projection for global population growth predicts that human numbers will peak at about 9.5 billion people. This means that there could be an extra three billion mouths to feed by the end of the century, a period in which substantial changes are anticipated in the wealth, calorific intake and dietary preferences of people in developing countries across the world.

 September 4 ,2012

Food company chief executive labels biofuels an aberration and expresses concern about potential impact of water wastage

Nestlé chief Paul Bulcke says that without more efficient use of water, the world's food supplies will become severely limited. Photograph: Eric Piermont/AFP/Getty Images