News release: “The World Bank said improved economic estimates showed there were more poor people around the world than previously thought while also revealing big successes in the fight to overcome extreme poverty.

The new estimates, which reflect improvements in internationally comparable price data, offer a much more accurate picture of the cost of living in developing countries and set a new poverty line of US$1.25 a day. They are based on the results of the 2005 International Comparison Program (ICP), released earlier this year.

In a new paper, The developing world is poorer than we thought but no less successful in the fight against poverty, Martin Ravallion and Shaohua Chen revise estimates of poverty since 1981, finding that 1.4 billion people (one in four) in the developing world were living below US$1.25 a day in 2005, down from 1.9 billion (one in two) in 1981.