February 2015 — Worldwide, more than 42 million children ages 5 and younger are overweight, according to the World Health Organization. In October 2014, NCCOR held a one-day meeting funded by the Robert Wood Johnson Foundation to convene leading international and interdisciplinary researchers and practitioners to share lessons learned about what works to guide ongoing efforts to reduce childhood obesity prevalence in the United States and worldwide. Using childhood obesity as a case study, the interactive forum addressed emerging and crosscutting goals to build a culture of health and spur ideas for future research and action.