Hungry Chadians eating ant food after locusts attack crops
Many farmers hit by last year's drought have lost their crops again - and some villagers are so hungry they're raiding ant hills for food.
LIVEBLOG: News and views from the worlds biggest anti-corruption conference
Our correspondents are blogging live from the International Anti-Corruption-Conference in Bangkok
Drugs drive hidden displacement in Colombia's city slums
Drug-fuelled violence in cities is pushing growing numbers of people to move to different parts of town or to other urban centres
Graft helps rogue states, extremists make nuclear arms - expert
Corruption helps rogue states and extremist groups buy materials and secret information necessary to make nuclear weapons, expert says