In India, a long economic boom has done little to reduce the vast number of cases of malnutrition and stunting in children, leaving them with mental and physical deficits that affect them for the rest of their lives. An emerging body of scientific studies suggest that many of the 162 million children under the age of 5 in the world who are malnourished are suffering less a lack of food than poor sanitation.

Read more in The New York Times, 13th July 2014