BBC: The World Bank has said that for the first time less than 10% of the world's population will be living in extreme poverty by the end of 2015. The bank said it was using a new income figure of $1.90 per day to define extreme poverty, up from $1.25. It forecasts the proportion of the world's population in this category to fall from 12.8% in 2012 to 9.6%. However, it said the "growing concentration of global poverty in sub-Saharan Africa is of great concern". Although the share of people in poverty...