The debate continues in 2013, with a calculated total of 842 million, or 12 percent of the world's population, experiencing chronic hunger over the past two years.
The FAO announced in 2012 that it was exploring new ways to measure "hunger", "food insecurity" and "undernourishment" - terms that are often used interchangeably. The 2013 SOFI is an improvement over the 2012 report, say experts, but there are still problems with the quality of data.
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