The World Bank estimates that more than one thousand million people live on less than one dollar a day. These are the poorest of the poor, about one-sixth of the world population.Martin Ravallion works for the Development Research Group at the World Bank. He says about fifty percent of the people in several African nations are among the world’s poorest. These nations include Ethiopia, Sierra Leone, Tanzania and Zambia.But even though these areas remain extremely poor, Mister Ravallion says world poverty has been cut in half over the last twenty years. He says the number of poor people dropped by almost four hundred million between nineteen eighty-one and two thousand one.
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