You are in a small health clinic in southern Chad. It is 9 a.m. The air is hot, dry, and filled with cries. You are amidst 40 mothers sitting on the ground or on the clinic’s porch, babies in their laps. Under brightly colored headscarves, their faces look tired, drawn, sad. You catch glimpses of the babies. Their skin is stretched over their chests like paper over wire frames. Their legs are long and thin. Their bellies are protruding. Four of the mothers, clearly malnourished themselves but still trying to breastfeed their babies, are sitting on a wooden bench. In front of them is a row of tall, yellow roses. You have never seen so much color and sadness in...