Book excerpt: Issue 37 of the Abstract Digest brings to you a set of global, regional, and India-focused articles on issues pertaining to undernutrition and its solutions. Global studies include the Optima Nutrition modelling assessing the likelihood of 129 countries reaching the global nutrition targets by 2030, a systematic review of economic evaluation of interventions to address undernutrition by scaling up proven interventions and identifying priority interventions, a study that identifies research priorities for social, behavioral and community engagement interventions for maternal and child health, and a review of literature on social accountability approaches. India-specific studies examine inequality in child undernutrition among urban populations, the economic feasibility of nutritionally adequate diets, and two studies focusing on frontline workers time use and factors influencing their performance. In this edition we have also included implementation research focused articles relevant for maternal and child health programs.