Photographer: Prashanth Vishwanathan/Bloomberg

How an American With a Knack for Math Saved India From Famine

Lester Brown has spent his career making shrewd projections about the food, water, and energy people need to survive, and pushing governments to respond. None of this math brings tears to his eyes except the time in 1965 he made some calculations and risked his career advising the president of the United States to save India from starving. 

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