Fast economic growth in Africa

The economic outlook for Africa is improving after a decade of growth of 5.4% for the continent that matches global rates, the World Bank has said.
The trend indicates that a fundamental change is occurring in Africa, a World Bank official told the BBC.
But the bank's latest report, Africa Development Indicators 2007 (ADI), says ongoing investment is needed to sustain long-term development on the continent.
Otherwise, a split may grow between affluent nations and stagnant ones.