From Our Own Correspondent

There have been reports from Afghanistan of people so desperate for food they have been selling their own children to raise the money they need. Our correspondent Yogita Lemaye was initially sceptical mood as she investigated whether locals really were trading their sons and daughters for cash - and what would then happen to them.For many years, Andrew Roy has been dispatching BBC correspondents around the world, most recently in his role as head of foreign newsgathering. He is about to leave the BBC, and warns that he is doing so at a time when there is more effort than ever being made to stop journalists doing their jobs. This might be military dictators wielding the threat of imprisonment, or democratically-elected governments using more subtle means of obstruction.World leaders are gathering for a two week summit in Glasgow, with an aim no less ambitious than saving the planet from the harmful effects of climate change. One problem which climate change is predicted to cause is an increase in flooding; war