Worldwide Hungry Children
© Per Square Mile/Tim De Chant
Half of children in the reddest countries are dangerously underweight due to malnutrition.
Few maps are more concerning than this one. Created by journalist Tim De Chant, it shows the percentage of children in each country whose weight is "more than two standard deviations below the median of the NCHS/CDC/WHO International Reference Population."

In other words, this map depicts the percentage of children in each country who are dangerously underweight on account of malnutrition. (Quantifying just how underweight these children are is difficult without knowing the variation in weight in the study population.) Data are from 1990 to 2002 and countries in blue indicate no data was available.

Worldwide Hungry Children_1
© Per Square Mile/Tim De Chant
In parts of Sudan and Niger, half of all children suffer from malnutrition.
That belt of red stretching from Africa through India, encompassing tens of millions of children, represents perhaps the biggest waste of human capital in history. Children who suffer from malnutrition are more susceptible to disease, less capable of getting an education and are likely to suffer from permanently stunted growth.
Worldwide Hungry Children_2
© Per Square Mile/Tim De Chant
Parts of Pakistan and India have proportions of underweight children as bad or worse than war-torn regions of Africa.
Many of the regions experiencing highest population growth are also the ones suffering the highest rates of child hunger.