He is only a teenager, but he is already a seasoned border jumper. Dressed in a torn t-shirt and blue work trousers, Robert, 16, (not his real name)...
Maize and wheat prices have shot up to their highest levels since 2000 in the past few months, according to the UN Food and Agriculture Organisation...
The long road to developing an effective HIV vaccine has been fraught with false leads and disappointing outcomes, but promising preliminary results...