Dr Arun Kumar Singh — A Life Devoted to the Newborn A clinician who chose district hospitals over conference halls, Dr. Arun Kumar Singh reshaped how India thinks about saving its smallest lives. His Purulia Zero-Ventilator SNCU concept remains his most radical contribution — proving that a newborn unit stripped of ventilators but rigorous about temperature, fluids, oxygen, and infection control could cut case fatalities by 54% in year one. It didn't just work in Purulia; it became an economic blueprint for health planners across South Asia, Sub-Saharan Africa, and Latin America. As National Advisor for RBSK, he built a screening architecture that others borrowed and scaled — most notably Kerala, whose Hridyam program, built on his CHD-focused framework, achieved a 41% reduction in CHD-related infant mortality in a remarkably short window. His book "1000 Days" codified what many knew intuitively but few had articulated with such clinical precision — that the window from conception to a child's second birthday is where the battle for lifelong health is won or lost. Beyond institutions and publications, he championed causes others treated as footnotes: physiological cord clamping, human milk banking, neurodevelopmental follow-up for NICU graduates, and the quiet revolution of multidisciplinary care under one roof. Over 75 papers, foundational RBSK training manuals, the Dhaatri Lifetime Achievement Award, and a DSc for contributions to science — the record speaks clearly. What makes him rare isn't any single achievement. It's that his clinical instinct, policy thinking, and social conscience have always pulled in the same direction — toward the child who had the least.