The Bulgarian establishment under threat from a million smartphones - Nick Thorpe on the protestors demanding their government steps down. Ahead of election day in Cambodia, Annie Caulfield goes to the circus and finds happy children and painful memories. Peter Day is in Zambia where diarrhoea is a major killer of children - medication works, but getting it to remote villages presents a huge challenge. John Pickford's in the Cook Islands, in the South Pacific, and tells us why the arrival there of two large canoes caused great excitement. And Simon Wilson has discovered that baseball's not just a metaphor for life in the US, it's also a way of preparing Americans - for failure!