Between 1990 and 2010, one billion people were lifted out of extreme poverty. But it may not be possible to do that again.The June cover of The Economist is cautiously optimistic about the possibility of ending extreme poverty by 2030. The driving force for the sharp decline in poverty worldwide over the last two decades was economic growth. Because of this, China is credited for three-quarters of the decline, but that is also why it may be even more difficult to pull the next billion out of misery.”Poorer governance in India and Africa, the next two targets, means that China’s experience is unlikely to be swiftly replicated there. Another reason is that the bare achievement of pulling people over the $1.25-a-day line has been relatively easy in the past few years because so many people were just below it.