The high speed cables bringing internet access to eastern and southern Africa.
Why Russia is nervous of misinterpretations of its history.
Is peace coming to the Niger Delta, Nigeria's oil producing heartland?
Why the Chinese government is afraid of the Falun Gong movement.
Is inflation going to be the world's next economic challenge?
Why has deep sea exploration progressed so slowly over recent decades?
Food prices are still high around the world -what can be done to bring them down?
The public spending debate that is dominating British politics.
Should the United States be spending money sending more people to the moon?
Do long-running series like Harry Potter represent the future of film-making?